fix: minor cleanups and improvements

* feat: load reproduction information

* feat: check reproduction environment against original environment

* fix: remove `trust_remote_code` setting

This improves security when running Heretic with an untrusted config file. The prompt is now always shown.

This is NOT a breaking change, because we currently ignore values for unknown settings, so existing configs continue to work.

* feat: reproduce model from JSON file

* feat: verify hashes of uploaded weight files

* fix: fix issues in automatic reproduction system (#352)

* fix: Check if a model is gated / accessible

* fix: handle unknown gated models

* feat: Auto install requirements

* simplify

* Revert "simplify"

This reverts commit 10287926e99e5543f67a72d38a595ae2b4084d71.

* Revert "feat: Auto install requirements"

This reverts commit f4be1abd043e17d83e589e54972c4ead2600c2b2.

* fix: Seed pytorch method

* reference, style

* simplify token

* feat: Export strategy in reproduce.json, v2

* style: Name

* simplify export strategy

* style: Rename

* enumeration

* maybe remove seed as well

* fix: don't lock settings with permanent strategy

* simplify no choice, use try/finally block

* feat: verify hashes of locally saved weight files

* fix: remove obsolete code from merge

* docs: add automatic reproduction instructions to reproduce README

---------

Co-authored-by: Vinay-Umrethe <vinayumrethe99@gmail.com>

README.md

@@ -1,6 +1,6 @@
-<img width="128" height="128" align="right" alt="Logo" src="https://github.com/user-attachments/assets/df5f2840-2f92-4991-aa57-252747d7182e" />
+<img width="128" align="right" alt="Logo" src="https://github.com/user-attachments/assets/df5f2840-2f92-4991-aa57-252747d7182e" />
 
-# Heretic: Fully automatic censorship removal for language models<br><br>[![Discord](https://img.shields.io/discord/1447831134212984903?color=5865F2&label=discord&labelColor=black&logo=discord&logoColor=white&style=for-the-badge)](https://discord.gg/gdXc48gSyT) [![Follow us on Hugging Face](https://huggingface.co/datasets/huggingface/badges/resolve/main/follow-us-on-hf-md-dark.svg)](https://huggingface.co/heretic-org) [![Codeberg mirror](https://img.shields.io/badge/Codeberg%20mirror-black?logo=codeberg&style=for-the-badge)](https://codeberg.org/p-e-w/heretic)
+# Heretic: Fully automatic censorship removal for language models<br><br>[![Discord](https://img.shields.io/discord/1447831134212984903?color=5865F2&label=discord&labelColor=black&logo=discord&logoColor=white&style=for-the-badge)](https://discord.gg/gdXc48gSyT) [![Matrix](https://img.shields.io/badge/Matrix-black?logo=matrix&style=for-the-badge)](https://matrix.to/#/#heretic:matrix.org) [![Follow us on Hugging Face](https://huggingface.co/datasets/huggingface/badges/resolve/main/follow-us-on-hf-md-dark.svg)](https://huggingface.co/heretic-org) [![Codeberg mirror](https://img.shields.io/badge/Codeberg%20mirror-black?logo=codeberg&style=for-the-badge)](https://codeberg.org/p-e-w/heretic)
 
 [![#1 Repository of the Day](https://trendshift.io/api/badge/repositories/20538)](https://trendshift.io/repositories/20538)
 
@@ -77,7 +77,7 @@ produced by competing abliteration tools:
 [2](https://old.reddit.com/r/LocalLLaMA/comments/1sy18lx/abliterlitics_benchmarks_and_tensor_comparison/).
 
 The community has created and published
-[well over 3000](https://huggingface.co/models?other=heretic)
+[well over 4000](https://huggingface.co/models?other=heretic)
 models with Heretic.
 
 

config.default.toml

@@ -123,10 +123,6 @@ n_trials = 200
 # Number of trials that use random sampling for the purpose of exploration.
 n_startup_trials = 60
 
-# Random seed for reproducible optimization. Set to an integer to enable.
-# Applies to Python's random module, NumPy, PyTorch, and Optuna.
-# seed = 75
-
 # Directory to save and load study progress to/from.
 study_checkpoint_dir = "checkpoints"
 

pyproject.toml

@@ -58,8 +58,8 @@ dev = [
 ]
 
 [project.urls]
-Homepage = "https://github.com/p-e-w/heretic"
+Homepage = "https://heretic-project.org"
-Documentation = "https://github.com/p-e-w/heretic"
+Documentation = "https://heretic-project.org/tutorial"
 Repository = "https://github.com/p-e-w/heretic.git"
 Issues = "https://github.com/p-e-w/heretic/issues"
 Changelog = "https://github.com/p-e-w/heretic/releases"

src/heretic/config.py

@@ -32,6 +32,11 @@ class RowNormalization(str, Enum):
     FULL = "full"
 
 
+class ExportStrategy(str, Enum):
+    MERGE = "merge"
+    ADAPTER = "adapter"
+
+
 class DatasetSpecification(BaseModel):
     dataset: str = Field(
         description="Hugging Face dataset ID, or path to dataset on disk."
@@ -119,6 +124,15 @@ class Settings(BaseSettings):
         exclude=True,
     )
 
+    reproduce: str | None = Field(
+        default=None,
+        description=(
+            "If this path or URL to a reproduce.json file is set, load reproduction information "
+            "from that file, and attempt to reproduce the abliterated model it originated from."
+        ),
+        exclude=True,
+    )
+
     dtypes: list[str] = Field(
         default=[
             # In practice, "auto" almost always means bfloat16.
@@ -167,13 +181,6 @@ class Settings(BaseSettings):
         ),
     )
 
-    trust_remote_code: bool | None = Field(
-        default=None,
-        description="Whether to trust remote code when loading the model.",
-        # For security reasons, we don't store this setting.
-        exclude=True,
-    )
-
     batch_size: int = Field(
         default=0,  # auto
         description="Number of input sequences to process in parallel (0 = auto).",
@@ -411,6 +418,11 @@ class Settings(BaseSettings):
         exclude=True,
     )
 
+    export_strategy: ExportStrategy | None = Field(
+        default=None,
+        description='How to export the model: "merge", "adapter", or unset to prompt the user.',
+    )
+
     max_shard_size: int | str = Field(
         default="5GB",
         description="Maximum size for individual safetensors files generated when exporting a model.",

src/heretic/main.py

@@ -47,7 +47,7 @@ import questionary
 import torch
 import torch.nn.functional as F
 import transformers
-from huggingface_hub import ModelCard, ModelCardData
+from huggingface_hub import HfApi, ModelCard, ModelCardData
 from lm_eval.models.huggingface import HFLM
 from optuna import Trial, TrialPruned
 from optuna.exceptions import ExperimentalWarning
@@ -55,20 +55,26 @@ from optuna.samplers import TPESampler
 from optuna.storages import JournalStorage
 from optuna.storages.journal import JournalFileBackend, JournalFileOpenLock
 from optuna.study import StudyDirection
-from optuna.trial import TrialState
+from optuna.trial import TrialState, create_trial
 from pydantic import ValidationError
 from questionary import Choice, Style
 from rich.table import Table
 from rich.traceback import install
 
 from .analyzer import Analyzer
-from .config import QuantizationMethod
+from .config import ExportStrategy, QuantizationMethod
 from .evaluator import Evaluator
 from .model import AbliterationParameters, Model, get_model_class
-from .reproduce import collect_reproducibles
+from .reproduce import (
+    check_environment,
+    collect_reproducibles,
+    load_reproduction_information,
+)
 from .system import empty_cache, get_accelerator_info
 from .utils import (
     format_duration,
+    format_exception,
+    get_file_sha256,
     get_readme_intro,
     get_trial_parameters,
     is_hf_path,
@@ -84,17 +90,23 @@ from .utils import (
 )
 
 
-def obtain_merge_strategy(settings: Settings, model: Model) -> str | None:
+def obtain_export_strategy(
+    settings: Settings,
+    model: Model,
+) -> ExportStrategy | None:
     """
-    Prompts the user for how to proceed with saving the model.
+    Gets the export strategy from settings or prompts the user.
     Provides info to the user if the model is quantized on memory use.
-    Returns "merge", "adapter", or None (if cancelled/invalid).
+    Returns an export strategy, or None if cancelled.
     """
 
+    if settings.export_strategy is not None:
+        return settings.export_strategy
+
     if settings.quantization == QuantizationMethod.BNB_4BIT:
         print()
         print(
-            "Model was loaded with quantization. Merging requires reloading the base model."
+            "The model was loaded with quantization. Merging requires reloading the base model."
         )
         print(
             "[yellow]WARNING: CPU merging requires dequantizing the entire model to system RAM.[/]"
@@ -113,7 +125,9 @@ def obtain_merge_strategy(settings: Settings, model: Model) -> str | None:
                     settings.model,
                     device_map="meta",
                     torch_dtype=torch.bfloat16,
-                    trust_remote_code=model.trusted_models.get(settings.model),
+                    trust_remote_code=True
+                    if settings.model in model.trusted_models
+                    else None,
                     **model.revision_kwargs,
                 )
                 footprint_bytes = meta_model.get_memory_footprint()
@@ -130,23 +144,24 @@ def obtain_merge_strategy(settings: Settings, model: Model) -> str | None:
             print(
                 "[yellow]Example: A 27B model requires ~80GB RAM. A 70B model requires ~200GB RAM.[/]"
             )
+
         print()
 
     strategy = prompt_select(
-        "How do you want to proceed?",
+        "How do you want to export the model?",
         choices=[
             Choice(
-                title="Merge LoRA into full model"
+                title="Merge the abliteration LoRA and export the full model"
                 + (
                     ""
                     if settings.quantization == QuantizationMethod.NONE
                     else " (requires sufficient RAM)"
                 ),
-                value="merge",
+                value=ExportStrategy.MERGE,
             ),
             Choice(
-                title="Save LoRA adapter only (can be merged later)",
+                title="Export the abliteration LoRA only (can be merged later)",
-                value="adapter",
+                value=ExportStrategy.ADAPTER,
             ),
         ],
     )
@@ -164,7 +179,9 @@ def run():
 
     # Modified "Pagga" font from https://budavariam.github.io/asciiart-text/
     print(f"[cyan]█░█░█▀▀░█▀▄░█▀▀░▀█▀░█░█▀▀[/]  v{version('heretic-llm')}")
-    print("[cyan]█▀█░█▀▀░█▀▄░█▀▀░░█░░█░█░░[/]")
+    print(
+        "[cyan]█▀█░█▀▀░█▀▄░█▀▀░░█░░█░█░░[/]  [blue underline]https://heretic-project.org[/]"
+    )
     print(
         "[cyan]▀░▀░▀▀▀░▀░▀░▀▀▀░░▀░░▀░▀▀▀[/]  [blue underline]https://github.com/p-e-w/heretic[/]"
     )
@@ -175,6 +192,7 @@ def run():
         len(sys.argv) > 1
         # Heretic is being invoked in standard (model processing) mode.
         and "--collect-reproducibles" not in sys.argv
+        and "--reproduce" not in sys.argv
         # No model has been explicitly provided.
         and "--model" not in sys.argv
         # The last argument is a parameter value rather than a flag (such as "--help").
@@ -185,7 +203,9 @@ def run():
 
     # Work around the "model" argument being required
     # when Heretic is invoked in a non-processing mode.
-    if "--collect-reproducibles" in sys.argv and "--model" not in sys.argv:
+    if (
+        "--collect-reproducibles" in sys.argv or "--reproduce" in sys.argv
+    ) and "--model" not in sys.argv:
         sys.argv.extend(["--model", ""])
 
     try:
@@ -195,8 +215,10 @@ def run():
     except ValidationError as error:
         print(f"[red]Configuration contains [bold]{error.error_count()}[/] errors:[/]")
 
-        for error in error.errors():
+        for error_details in error.errors():
-            print(f"[bold]{error['loc'][0]}[/]: [yellow]{error['msg']}[/]")
+            print(
+                f"[bold]{error_details['loc'][0]}[/]: [yellow]{error_details['msg']}[/]"
+            )
 
         print()
         print(
@@ -208,6 +230,31 @@ def run():
         collect_reproducibles(settings.collect_reproducibles)
         return
 
+    reproduction_mode = settings.reproduce is not None
+
+    if settings.reproduce is not None:
+        print(f"Loading reproduction information from [bold]{settings.reproduce}[/]...")
+        # FIXME: "Reproduction"/"reproducibility" name inconsistency!
+        reproduction_information = load_reproduction_information(settings.reproduce)
+
+        if reproduction_information["version"] not in ["1", "2"]:
+            print(
+                (
+                    f"[red]Unsupported file format version: [bold]{reproduction_information['version']}[/].[/] "
+                    "Try loading the file with a newer version of Heretic."
+                )
+            )
+            return
+
+        if not check_environment(reproduction_information):
+            return
+
+        print()
+
+        verify_hashes = reproduction_information["version"] != "1"
+
+        settings = Settings.model_validate(reproduction_information["settings"])
+
     if settings.seed is None:
         settings.seed = random.randint(0, 2**32 - 1)
 
@@ -257,7 +304,11 @@ def run():
     except IndexError:
         existing_study = None
 
-    if existing_study is not None and settings.evaluate_model is None:
+    if (
+        existing_study is not None
+        and settings.evaluate_model is None
+        and not reproduction_mode
+    ):
         choices = []
 
         if existing_study.user_attrs["finished"]:
@@ -362,7 +413,12 @@ def run():
                     # We cannot recover from this.
                     raise
 
-                print(f"[red]Failed[/] ({error})")
+                formatted = format_exception(error)
+                if "\n" in formatted:
+                    print(f"[red]Failed:\n{formatted}[/]")
+                else:
+                    print(f"[red]Failed ({formatted})[/]")
+
                 break
 
             response_lengths = [
@@ -597,162 +653,185 @@ def run():
             trial.study.stop()
             raise TrialPruned()
 
-    study = optuna.create_study(
+    if not reproduction_mode:
-        sampler=TPESampler(
+        study = optuna.create_study(
-            n_startup_trials=settings.n_startup_trials,
+            sampler=TPESampler(
-            n_ei_candidates=128,
+                n_startup_trials=settings.n_startup_trials,
-            multivariate=True,
+                n_ei_candidates=128,
-            seed=settings.seed,
+                multivariate=True,
-        ),
+                seed=settings.seed,
-        directions=[StudyDirection.MINIMIZE, StudyDirection.MINIMIZE],
+            ),
-        storage=storage,
+            directions=[StudyDirection.MINIMIZE, StudyDirection.MINIMIZE],
-        study_name="heretic",
+            storage=storage,
-        load_if_exists=True,
+            study_name="heretic",
-    )
+            load_if_exists=True,
-
-    study.set_user_attr("settings", settings.model_dump_json())
-    study.set_user_attr("finished", False)
-
-    def count_completed_trials() -> int:
-        # Count number of complete trials to compute trials to run.
-        return sum([(1 if t.state == TrialState.COMPLETE else 0) for t in study.trials])
-
-    start_index = trial_index = count_completed_trials()
-    if start_index > 0:
-        print()
-        print("Resuming existing study.")
-
-    try:
-        study.optimize(
-            objective_wrapper,
-            n_trials=settings.n_trials - count_completed_trials(),
         )
-    except KeyboardInterrupt:
-        # This additional handler takes care of the small chance that KeyboardInterrupt
-        # is raised just between trials, which wouldn't be caught by the handler
-        # defined in objective_wrapper above.
-        pass
 
-    if count_completed_trials() == settings.n_trials:
+        study.set_user_attr("settings", settings.model_dump_json())
-        study.set_user_attr("finished", True)
+        study.set_user_attr("finished", False)
+
+        start_index = trial_index = len(study.trials)
+        if start_index > 0:
+            print()
+            print("Resuming existing study.")
+
+        try:
+            study.optimize(
+                objective_wrapper,
+                n_trials=settings.n_trials - len(study.trials),
+            )
+        except KeyboardInterrupt:
+            # This additional handler takes care of the small chance that KeyboardInterrupt
+            # is raised just between trials, which wouldn't be caught by the handler
+            # defined in objective_wrapper above.
+            pass
+
+        if len(study.trials) == settings.n_trials:
+            study.set_user_attr("finished", True)
 
     while True:
-        # If no trials at all have been evaluated, the study must have been stopped
+        if not reproduction_mode:
-        # by pressing Ctrl+C while the first trial was running. In this case, we just
+            # If no trials at all have been evaluated, the study must have been stopped
-        # re-raise the interrupt to invoke the standard handler defined below.
+            # by pressing Ctrl+C while the first trial was running. In this case, we just
-        completed_trials = [t for t in study.trials if t.state == TrialState.COMPLETE]
+            # re-raise the interrupt to invoke the standard handler defined below.
-        if not completed_trials:
+            completed_trials = [
-            raise KeyboardInterrupt
+                t for t in study.trials if t.state == TrialState.COMPLETE
+            ]
+            if not completed_trials:
+                raise KeyboardInterrupt
 
-        # Get the Pareto front of trials. We can't use study.best_trials directly
+            # Get the Pareto front of trials. We can't use study.best_trials directly
-        # as get_score() doesn't return the pure KL divergence and refusal count.
+            # as get_score() doesn't return the pure KL divergence and refusal count.
-        # Note: Unlike study.best_trials, this does not handle objective constraints.
+            # Note: Unlike study.best_trials, this does not handle objective constraints.
-        sorted_trials = sorted(
+            sorted_trials = sorted(
-            completed_trials,
+                completed_trials,
-            key=lambda trial: (
+                key=lambda trial: (
-                trial.user_attrs["refusals"],
+                    trial.user_attrs["refusals"],
-                trial.user_attrs["kl_divergence"],
+                    trial.user_attrs["kl_divergence"],
-            ),
-        )
-        min_divergence = math.inf
-        best_trials = []
-        for trial in sorted_trials:
-            kl_divergence = trial.user_attrs["kl_divergence"]
-            if kl_divergence < min_divergence:
-                min_divergence = kl_divergence
-                best_trials.append(trial)
-
-        choices = [
-            Choice(
-                title=(
-                    f"[Trial {trial.user_attrs['index']:>3}] "
-                    f"Refusals: {trial.user_attrs['refusals']:>2}/{len(evaluator.bad_prompts)}, "
-                    f"KL divergence: {trial.user_attrs['kl_divergence']:.4f}"
                 ),
-                value=trial,
             )
-            for trial in best_trials
+            min_divergence = math.inf
-        ]
+            best_trials = []
+            for trial in sorted_trials:
+                kl_divergence = trial.user_attrs["kl_divergence"]
+                if kl_divergence < min_divergence:
+                    min_divergence = kl_divergence
+                    best_trials.append(trial)
 
-        choices.append(
+            choices = [
-            Choice(
+                Choice(
-                title="Run additional trials",
+                    title=(
-                value="continue",
+                        f"[Trial {trial.user_attrs['index']:>3}] "
-            )
+                        f"Refusals: {trial.user_attrs['refusals']:>2}/{len(evaluator.bad_prompts)}, "
-        )
+                        f"KL divergence: {trial.user_attrs['kl_divergence']:.4f}"
+                    ),
+                    value=trial,
+                )
+                for trial in best_trials
+            ]
 
-        choices.append(
+            choices.append(
-            Choice(
+                Choice(
-                title="Exit program",
+                    title="Run additional trials",
-                value="",
+                    value="continue",
+                )
             )
-        )
 
-        print()
+            choices.append(
-        print("[bold green]Optimization finished![/]")
+                Choice(
-        print()
+                    title="Exit program",
-        print(
+                    value="",
-            (
+                )
-                "The following trials resulted in Pareto optimal combinations of refusals and KL divergence. "
+            )
-                "After selecting a trial, you will be able to save the model, upload it to Hugging Face, "
+
-                "chat with it to test how well it works, or run standard benchmarks on it. "
+            print()
-                "You can return to this menu later to select a different trial. "
+            print("[bold green]Optimization finished![/]")
-                "[yellow]Note that KL divergence values above 0.5 usually indicate significant damage to the original model's capabilities.[/]"
+            print()
+            print(
+                (
+                    "The following trials resulted in Pareto optimal combinations of refusals and KL divergence. "
+                    "After selecting a trial, you will be able to save the model, upload it to Hugging Face, "
+                    "chat with it to test how well it works, or run standard benchmarks on it. "
+                    "You can return to this menu later to select a different trial. "
+                    "[yellow]Note that KL divergence values above 0.5 usually indicate significant damage to the original model's capabilities.[/]"
+                )
             )
-        )
 
         while True:
-            print()
+            if reproduction_mode:
-            trial = prompt_select("Which trial do you want to use?", choices)
+                parameters = reproduction_information["parameters"]
+                metrics = reproduction_information["metrics"]
+
+                trial = create_trial(
+                    values=[],
+                    user_attrs={
+                        "direction_index": parameters["direction_index"],
+                        "parameters": parameters["abliteration_parameters"],
+                        "kl_divergence": metrics["kl_divergence"],
+                        "refusals": metrics["refusals"],
+                        "base_refusals": metrics["base_refusals"],
+                        "n_bad_prompts": metrics["n_bad_prompts"],
+                    },
+                )
+
+                print()
+                print("Restoring model from reproduction information...")
+            else:
+                print()
+                trial = prompt_select("Which trial do you want to use?", choices)
+
+                if trial is None or trial == "":
+                    return
+
+                if trial == "continue":
+                    while True:
+                        try:
+                            n_additional_trials = prompt_text(
+                                "How many additional trials do you want to run?"
+                            )
+                            if n_additional_trials is None or n_additional_trials == "":
+                                n_additional_trials = 0
+                                break
+                            n_additional_trials = int(n_additional_trials)
+                            if n_additional_trials > 0:
+                                break
+                            print("[red]Please enter a number greater than 0.[/]")
+                        except ValueError:
+                            print("[red]Please enter a number.[/]")
+
+                    if n_additional_trials == 0:
+                        continue
+
+                    settings.n_trials += n_additional_trials
+                    study.set_user_attr("settings", settings.model_dump_json())
+                    study.set_user_attr("finished", False)
 
-            if trial == "continue":
-                while True:
                     try:
-                        n_additional_trials = prompt_text(
+                        study.optimize(
-                            "How many additional trials do you want to run?"
+                            objective_wrapper,
+                            n_trials=settings.n_trials - len(study.trials),
                         )
-                        if n_additional_trials is None or n_additional_trials == "":
+                    except KeyboardInterrupt:
-                            n_additional_trials = 0
+                        pass
-                            break
-                        n_additional_trials = int(n_additional_trials)
-                        if n_additional_trials > 0:
-                            break
-                        print("[red]Please enter a number greater than 0.[/]")
-                    except ValueError:
-                        print("[red]Please enter a number.[/]")
 
-                if n_additional_trials == 0:
+                    if len(study.trials) == settings.n_trials:
-                    continue
+                        study.set_user_attr("finished", True)
 
-                settings.n_trials += n_additional_trials
+                    break
-                study.set_user_attr("settings", settings.model_dump_json())
-                study.set_user_attr("finished", False)
 
-                try:
+                print()
-                    study.optimize(
+                print(
-                        objective_wrapper,
+                    f"Restoring model from trial [bold]{trial.user_attrs['index']}[/]..."
-                        n_trials=settings.n_trials - count_completed_trials(),
+                )
-                    )
-                except KeyboardInterrupt:
-                    pass
 
-                if count_completed_trials() == settings.n_trials:
-                    study.set_user_attr("finished", True)
-
-                break
-
-            elif trial is None or trial == "":
-                return
-
-            print()
-            print(f"Restoring model from trial [bold]{trial.user_attrs['index']}[/]...")
             print("* Parameters:")
             for name, value in get_trial_parameters(trial).items():
                 print(f"  * {name} = [bold]{value}[/]")
 
-            # Per https://github.com/huggingface/peft/issues/868#issuecomment-1820642893 once a LoRA is merged it's
+            # Per https://github.com/huggingface/peft/issues/868#issuecomment-1820642893
-            # expected to be empty. Provide a utility function to restore the previous LoRA-ified state.
+            # once a LoRA is merged it's expected to be empty. Provide a utility function
-            def reset_trial_model() -> None:
+            # to restore the previous LoRA-ified state.
+            def reset_trial_model():
                 print("* Resetting model...")
                 model.reset_model()
                 print("* Abliterating...")
@@ -776,12 +855,20 @@ def run():
                         "Upload the model to Hugging Face",
                         "Chat with the model",
                         "Benchmark the model",
-                        "Return to the trial selection menu",
+                        Choice(
+                            title="Exit program"
+                            if reproduction_mode
+                            else "Return to the trial selection menu",
+                            value="",
+                        ),
                     ],
                 )
 
-                if action is None or action == "Return to the trial selection menu":
+                if action is None or action == "":
-                    break
+                    if reproduction_mode:
+                        return
+                    else:
+                        break
 
                 # All actions are wrapped in a try/except block so that if an error occurs,
                 # another action can be tried, instead of the program crashing and losing
@@ -793,11 +880,11 @@ def run():
                             if not save_directory:
                                 continue
 
-                            strategy = obtain_merge_strategy(settings, model)
+                            strategy = obtain_export_strategy(settings, model)
                             if strategy is None:
                                 continue
 
-                            if strategy == "adapter":
+                            if strategy == ExportStrategy.ADAPTER:
                                 print("Saving LoRA adapter...")
                                 model.model.save_pretrained(
                                     save_directory,
@@ -813,10 +900,37 @@ def run():
                                 del merged_model
                                 empty_cache()
                                 model.tokenizer.save_pretrained(save_directory)
+                                if model.processor is not None:
+                                    model.processor.save_pretrained(save_directory)
                                 reset_trial_model()
 
                             print(f"Model saved to [bold]{save_directory}[/].")
 
+                            if reproduction_mode and verify_hashes:
+                                print("Verifying hashes of weight files...")
+
+                                for (
+                                    filename,
+                                    original_sha256,
+                                ) in reproduction_information["hashes"].items():
+                                    file_path = Path(save_directory) / filename
+
+                                    if file_path.exists():
+                                        sha256 = get_file_sha256(file_path)
+
+                                        if sha256.lower() == original_sha256.lower():
+                                            print(
+                                                f"[bold]{filename}:[/] [green]Hash matches[/]"
+                                            )
+                                        else:
+                                            print(
+                                                f"[bold]{filename}:[/] [yellow]Hash doesn't match[/]"
+                                            )
+                                    else:
+                                        print(
+                                            f"[bold]{filename}:[/] [red]File not found[/]"
+                                        )
+
                         case "Upload the model to Hugging Face":
                             # We don't use huggingface_hub.login() because that stores the token on disk,
                             # and since this program will often be run on rented or shared GPU servers,
@@ -851,7 +965,7 @@ def run():
                                 continue
                             private = visibility == "Private"
 
-                            strategy = obtain_merge_strategy(settings, model)
+                            strategy = obtain_export_strategy(settings, model)
                             if strategy is None:
                                 continue
 
@@ -863,8 +977,10 @@ def run():
                                 settings.good_evaluation_prompts.dataset,
                                 settings.bad_evaluation_prompts.dataset,
                             ]
-                            is_reproducible = is_hf_path(settings.model) and all(
+                            is_reproducible = (
-                                is_hf_path(dataset) for dataset in datasets
+                                is_hf_path(settings.model)
+                                and all(is_hf_path(dataset) for dataset in datasets)
+                                and not reproduction_mode
                             )
 
                             if is_reproducible:
@@ -899,7 +1015,7 @@ def run():
                             else:
                                 reproducibility_information = "none"
 
-                            if strategy == "adapter":
+                            if strategy == ExportStrategy.ADAPTER:
                                 print("Uploading LoRA adapter...")
                                 model.model.push_to_hub(
                                     repo_id,
@@ -923,6 +1039,12 @@ def run():
                                     private=private,
                                     token=token,
                                 )
+                                if model.processor is not None:
+                                    model.processor.push_to_hub(
+                                        repo_id,
+                                        private=private,
+                                        token=token,
+                                    )
                                 reset_trial_model()
 
                             if is_hf_path(settings.model):
@@ -961,21 +1083,77 @@ def run():
                             if reproducibility_information != "none":
                                 # Set the number of trials to the number of actual completed trials
                                 # for the reproduction configuration.
-                                settings.n_trials = count_completed_trials()
+                                settings.n_trials = len(study.trials)
+                                current_export_strategy = settings.export_strategy
+                                settings.export_strategy = strategy
 
-                                upload_reproduce_folder(
+                                try:
-                                    repo_id,
+                                    upload_reproduce_folder(
-                                    settings,
+                                        repo_id,
-                                    token,
+                                        settings,
-                                    checkpoint_path=study_checkpoint_file,
+                                        token,
-                                    trial=trial,
+                                        checkpoint_path=study_checkpoint_file,
-                                    include_system_information=(
+                                        trial=trial,
-                                        reproducibility_information == "full"
+                                        include_system_information=(
-                                    ),
+                                            reproducibility_information == "full"
-                                )
+                                        ),
+                                    )
+                                finally:
+                                    settings.export_strategy = current_export_strategy
 
                             print(f"Model uploaded to [bold]{repo_id}[/].")
 
+                            if reproduction_mode and verify_hashes:
+                                print("Verifying hashes of weight files...")
+
+                                api = HfApi()
+                                model_info = api.model_info(
+                                    repo_id,
+                                    files_metadata=True,
+                                    token=token,
+                                )
+
+                                if not model_info.siblings:
+                                    raise RuntimeError(
+                                        "Could not fetch uploaded model hashes."
+                                    )
+
+                                for (
+                                    filename,
+                                    original_sha256,
+                                ) in reproduction_information["hashes"].items():
+                                    file_found = False
+
+                                    for file in model_info.siblings:
+                                        if file.rfilename == filename:
+                                            sha256 = getattr(file, "lfs", {}).get(
+                                                "sha256"
+                                            )
+                                            if not sha256:
+                                                raise RuntimeError(
+                                                    "Could not fetch uploaded model hashes."
+                                                )
+
+                                            if (
+                                                sha256.lower()
+                                                == original_sha256.lower()
+                                            ):
+                                                print(
+                                                    f"[bold]{filename}:[/] [green]Hash matches[/]"
+                                                )
+                                            else:
+                                                print(
+                                                    f"[bold]{filename}:[/] [yellow]Hash doesn't match[/]"
+                                                )
+
+                                            file_found = True
+                                            break
+
+                                    if not file_found:
+                                        print(
+                                            f"[bold]{filename}:[/] [red]File not found[/]"
+                                        )
+
                         case "Chat with the model":
                             print()
                             print(
@@ -1114,7 +1292,11 @@ def run():
                                 print(table)
 
                 except Exception as error:
-                    print(f"[red]Error: {error}[/]")
+                    formatted = format_exception(error)
+                    if "\n" in formatted:
+                        print(f"[red]Error:\n{formatted}[/]")
+                    else:
+                        print(f"[red]Error: {formatted}[/]")
 
 
 def main():

src/heretic/model.py

@@ -17,12 +17,14 @@ from torch.nn import Module, ModuleList
 from transformers import (
     AutoModelForCausalLM,
     AutoModelForImageTextToText,
+    AutoProcessor,
     AutoTokenizer,
     BatchEncoding,
     BitsAndBytesConfig,
     PretrainedConfig,
     PreTrainedModel,
     PreTrainedTokenizerBase,
+    ProcessorMixin,
     TextStreamer,
 )
 from transformers.generation import (
@@ -31,7 +33,7 @@ from transformers.generation import (
 
 from .config import QuantizationMethod, RowNormalization, Settings
 from .system import empty_cache
-from .utils import Prompt, batchify, print
+from .utils import Prompt, batchify, format_exception, print
 
 
 def get_model_class(
@@ -56,7 +58,10 @@ class AbliterationParameters:
 class Model:
     model: PreTrainedModel | PeftModel
     tokenizer: PreTrainedTokenizerBase
+    # Set for multimodal models, None for text-only ones.
+    processor: ProcessorMixin | None
     peft_config: LoraConfig
+    dtype: torch.dtype
 
     def __init__(self, settings: Settings):
         self.settings = settings
@@ -71,10 +76,17 @@ class Model:
 
         self.tokenizer = AutoTokenizer.from_pretrained(
             settings.model,
-            trust_remote_code=settings.trust_remote_code,
             **self.revision_kwargs,
         )
 
+        # Multimodal models have a processor we'll want to save.
+        self.processor = None
+        if get_model_class(settings.model) == AutoModelForImageTextToText:
+            self.processor = AutoProcessor.from_pretrained(
+                settings.model,
+                **self.revision_kwargs,
+            )
+
         # Fallback for tokenizers that don't declare a special pad token.
         if self.tokenizer.pad_token is None:
             self.tokenizer.pad_token = self.tokenizer.eos_token
@@ -90,10 +102,8 @@ class Model:
             if settings.max_memory
             else None
         )
-        self.trusted_models = {settings.model: settings.trust_remote_code}
 
-        if self.settings.evaluate_model is not None:
+        self.trusted_models = set()
-            self.trusted_models[settings.evaluate_model] = settings.trust_remote_code
 
         for dtype in settings.dtypes:
             print(f"* Trying dtype [bold]{dtype}[/]...")
@@ -112,15 +122,19 @@ class Model:
                     dtype=dtype,
                     device_map=settings.device_map,
                     max_memory=self.max_memory,
-                    trust_remote_code=self.trusted_models.get(settings.model),
+                    trust_remote_code=True
+                    if settings.model in self.trusted_models
+                    else None,
                     **self.revision_kwargs,
                     **extra_kwargs,
                 )
 
+                self.dtype = self.model.dtype
+
                 # If we reach this point and the model requires trust_remote_code,
-                # either the user accepted, or settings.trust_remote_code is True.
+                # the user must have agreed when prompted to execute remote code,
-                if self.trusted_models.get(settings.model) is None:
+                # because from_pretrained raises an exception otherwise.
-                    self.trusted_models[settings.model] = True
+                self.trusted_models.add(settings.model)
 
                 # A test run can reveal dtype-related problems such as the infamous
                 # "RuntimeError: probability tensor contains either `inf`, `nan` or element < 0"
@@ -137,7 +151,13 @@ class Model:
             except Exception as error:
                 self.model = None  # ty:ignore[invalid-assignment]
                 empty_cache()
-                print(f"* [red]Failed[/] ({error})")
+
+                formatted = format_exception(error)
+                if "\n" in formatted:
+                    print(f"* [red]Failed:\n{formatted}[/]")
+                else:
+                    print(f"* [red]Failed ({formatted})[/]")
+
                 continue
 
             if settings.quantization == QuantizationMethod.BNB_4BIT:
@@ -264,7 +284,9 @@ class Model:
                 self.settings.model,
                 torch_dtype=self.model.dtype,
                 device_map="cpu",
-                trust_remote_code=self.trusted_models.get(self.settings.model),
+                trust_remote_code=True
+                if self.settings.model in self.trusted_models
+                else None,
                 **self.revision_kwargs,
             )
 
@@ -300,33 +322,40 @@ class Model:
         - Slow path: If switching models or after merge_and_unload(),
           performs full model reload with quantization config.
         """
-        current_model = getattr(self.model.config, "name_or_path", None)
+
+        # If a prior model load was interrupted/cancelled mid-process, self.model will be None.
+        current_model = None
+        if self.model is not None:
+            current_model = getattr(self.model.config, "name_or_path", None)
+
         if current_model == self.settings.model and not self.needs_reload:
-            # Reset LoRA adapters to zero (identity transformation)
+            # Reset LoRA adapters to zero (identity transformation).
             for name, module in self.model.named_modules():
                 if "lora_B" in name and hasattr(module, "weight"):
                     torch.nn.init.zeros_(module.weight)
             return
 
-        dtype = self.model.dtype
-
         # Purge existing model object from memory to make space.
         self.model = None  # ty:ignore[invalid-assignment]
         empty_cache()
 
-        quantization_config = self._get_quantization_config(str(dtype).split(".")[-1])
+        quantization_config = self._get_quantization_config(
+            str(self.dtype).split(".")[-1]
+        )
 
-        # Build kwargs, only include quantization_config if it's not None
+        # Build kwargs, only include quantization_config if it's not None.
         extra_kwargs = {}
         if quantization_config is not None:
             extra_kwargs["quantization_config"] = quantization_config
 
         self.model = get_model_class(self.settings.model).from_pretrained(
             self.settings.model,
-            dtype=dtype,
+            dtype=self.dtype,
             device_map=self.settings.device_map,
             max_memory=self.max_memory,
-            trust_remote_code=self.trusted_models.get(self.settings.model),
+            trust_remote_code=True
+            if self.settings.model in self.trusted_models
+            else None,
             **self.revision_kwargs,
             **extra_kwargs,
         )
@@ -551,6 +580,10 @@ class Model:
                         W = W - W_org
                         # Use a low-rank SVD to get an approximation of the matrix.
                         r = self.peft_config.r
+                        # svd_lowrank is randomized:
+                        # https://github.com/pytorch/pytorch/blob/20919052303c0b5ba87f8bf7e19237dc33ab09d3/torch/_lowrank.py#L108-L109
+                        # Reseed immediately before the call so restoring a trial is independent of RNG history.
+                        torch.manual_seed(self.settings.seed)
                         U, S, Vh = torch.svd_lowrank(W, q=2 * r + 4, niter=6)
                         # Truncate it to the part we want to store in the LoRA adapter.
                         # Note: svd_lowrank actually returns V, so transpose it to get Vh.
@@ -747,7 +780,7 @@ class Model:
         _, outputs = self.generate(
             prompts,
             max_new_tokens=1,
-            output_scores=True,
+            output_logits=True,
             return_dict_in_generate=True,
             use_cache=False,
         )
@@ -757,8 +790,10 @@ class Model:
         outputs = cast(GenerateDecoderOnlyOutput, outputs)
 
         # Logits for the first (only) generated token.
-        # This cast is valid because we passed output_scores=True above.
+        # Use raw logits, not processed generation scores; processors can insert
-        logits = cast(tuple[FloatTensor], outputs.scores)[0]
+        # -inf for suppressed tokens, which can make KL divergence evaluate to NaN.
+        # This cast is valid because we passed output_logits=True above.
+        logits = cast(tuple[FloatTensor], outputs.logits)[0]
 
         # The returned tensor has shape (prompt, token).
         logprobs = F.log_softmax(logits, dim=-1)

src/heretic/reproduce.py

@@ -1,13 +1,33 @@
 # SPDX-License-Identifier: AGPL-3.0-or-later
 # Copyright (C) 2025-2026  Philipp Emanuel Weidmann <pew@worldwidemann.com> + contributors
 
+import json
+import platform
+import random
 import shutil
+from dataclasses import asdict
+from enum import IntEnum
 from pathlib import Path
+from typing import Any, cast
+from urllib.request import urlopen
 
+import cpuinfo
+import torch
 from huggingface_hub import HfApi, hf_hub_download
-from huggingface_hub.utils import disable_progress_bars, enable_progress_bars
+from huggingface_hub.utils import (
+    GatedRepoError,
+    disable_progress_bars,
+    enable_progress_bars,
+)
+from questionary import Choice
+from rich.table import Table
 
-from .utils import print
+from .system import (
+    get_accelerator_info_dict,
+    get_heretic_version_info,
+    get_requirements_dict,
+)
+from .utils import print, prompt_select
 
 
 def collect_reproducibles(path: str):
@@ -21,6 +41,7 @@ def collect_reproducibles(path: str):
     models = api.list_models(
         filter=["heretic", "reproducible"],
         sort="created_at",
+        expand=["gated", "tags"],
     )
 
     found = 0
@@ -35,6 +56,12 @@ def collect_reproducibles(path: str):
             if model.tags is not None and "gguf" in model.tags:
                 continue
 
+            if model.gated:
+                try:
+                    api.auth_check(model.id, repo_type="model")
+                except GatedRepoError:
+                    continue
+
             print(f"[bold]{model.id}[/]...", end="")
 
             user, repository = model.id.split("/")
@@ -81,3 +108,275 @@ def collect_reproducibles(path: str):
     print(f"Found: [bold]{found}[/] files")
     print(f"Downloaded: [bold]{downloaded}[/] files")
     print(f"Already stored: [bold]{found - downloaded}[/] files")
+
+
+def load_reproduction_information(path: str) -> dict[str, Any]:
+    if path.lower().startswith(("http://", "https://")):
+        # The path is a URL on the web.
+
+        # Obtain raw download URL.
+        path = path.replace("/blob/", "/raw/")  # Hugging Face, GitHub
+        path = path.replace("/src/branch/", "/raw/branch/")  # Codeberg
+
+        json_str = urlopen(path).read().decode("utf-8")
+    else:
+        # The path is (assumed to be) a local file system path.
+        json_str = Path(path).read_text(encoding="utf-8")
+
+    return json.loads(json_str)
+
+
+class MismatchSeverity(IntEnum):
+    LOW = 1
+    MEDIUM = 2
+    HIGH = 3
+    CRITICAL = 4
+
+    def __rich__(self) -> str:
+        match self:
+            case MismatchSeverity.LOW:
+                return "[green]low[/]"
+            case MismatchSeverity.MEDIUM:
+                return "[yellow]medium[/]"
+            case MismatchSeverity.HIGH:
+                return "[red]high[/]"
+            case MismatchSeverity.CRITICAL:
+                return "[bold red]critical[/]"
+            case _:
+                raise ValueError(f"unknown MismatchSeverity value: {self}")
+
+
+def get_package_mismatch_severity(package_name: str) -> MismatchSeverity:
+    if package_name in [
+        "heretic-llm",
+    ]:
+        return MismatchSeverity.CRITICAL
+    elif package_name in [
+        "torch",
+        "transformers",
+    ]:
+        return MismatchSeverity.HIGH
+    elif package_name in [
+        "accelerate",
+        "bitsandbytes",
+        "kernels",
+        "optuna",
+        "peft",
+        "tokenizers",
+        "triton",
+    ]:
+        return MismatchSeverity.MEDIUM
+    else:
+        return MismatchSeverity.LOW
+
+
+def format_version_information(version_information: dict[str, Any]) -> str:
+    version = version_information["version"]
+    metadata = version_information["metadata"]
+
+    if "type" in metadata:
+        match metadata["type"]:
+            case "pypi":
+                return version
+            case "git":
+                return f"{version}-git+{metadata['url']}@{metadata['commit_hash']}"
+            case "local":
+                # Append a random number to ensure that two local installations
+                # are always considered to be different versions.
+                return f"{version}-local-{random.randint(2**16, 2**17)}"
+            case _:
+                raise ValueError(
+                    f"unknown metadata.type value in version information: {metadata['type']}"
+                )
+    else:
+        return f"{version}-unknown-{random.randint(2**16, 2**17)}"
+
+
+def check_environment(reproduction_information: dict[str, Any]) -> bool:
+    mismatch_severity: MismatchSeverity | None = None
+
+    system_mismatches = []
+    package_mismatches = []
+
+    def verify(
+        mismatch_list: list[tuple[str, Any, Any, MismatchSeverity]],
+        name: str,
+        this: Any,
+        original: Any,
+        severity: MismatchSeverity,
+    ):
+        nonlocal mismatch_severity
+        if this != original:
+            mismatch_list.append((name, this, original, severity))
+            if mismatch_severity is None:
+                mismatch_severity = severity
+            else:
+                mismatch_severity = max(severity, mismatch_severity)
+
+    if "system" in reproduction_information:
+        system = reproduction_information["system"]
+
+        verify(
+            system_mismatches,
+            "Python version",
+            platform.python_version(),
+            system["python"]["version"],
+            MismatchSeverity.LOW,
+        )
+
+        verify(
+            system_mismatches,
+            "Operating system",
+            platform.platform(),
+            system["os"]["platform"],
+            MismatchSeverity.LOW,
+        )
+
+        verify(
+            system_mismatches,
+            "CPU",
+            cpuinfo.get_cpu_info().get("brand_raw"),
+            system["cpu"]["brand"],
+            MismatchSeverity.LOW,
+        )
+
+        accelerators = get_accelerator_info_dict()
+
+        verify(
+            system_mismatches,
+            "Accelerator type",
+            accelerators["type"],
+            system["accelerators"]["type"],
+            MismatchSeverity.HIGH,
+        )
+
+        if (
+            accelerators["type"]
+            and accelerators["type"] == system["accelerators"]["type"]
+        ):
+            verify(
+                system_mismatches,
+                accelerators["api_name"],
+                accelerators["api_version"],
+                system["accelerators"]["api_version"],
+                MismatchSeverity.MEDIUM,
+            )
+            verify(
+                system_mismatches,
+                "Driver version",
+                accelerators["driver_version"],
+                system["accelerators"]["driver_version"],
+                MismatchSeverity.MEDIUM,
+            )
+            verify(
+                system_mismatches,
+                "Devices",
+                "\n".join([device["name"] for device in accelerators["devices"]]),
+                "\n".join(
+                    [device["name"] for device in system["accelerators"]["devices"]]
+                ),
+                MismatchSeverity.MEDIUM,
+            )
+
+    else:
+        print(
+            (
+                "[yellow]The provided JSON file does not contain system information. "
+                "Some system parameters can affect reproducibility, but due to the lack of system information, "
+                "Heretic is unable to verify that those parameters match the original environment. "
+                "Reproduction may or may not produce a byte-for-byte identical model.[/]"
+            )
+        )
+
+    requirements = get_requirements_dict()
+    requirements["heretic-llm"] = format_version_information(
+        asdict(get_heretic_version_info())
+    )
+    requirements["torch"] = torch.__version__
+
+    original_requirements = reproduction_information["environment"]["requirements"]
+    original_requirements["heretic-llm"] = format_version_information(
+        reproduction_information["environment"]["heretic"]
+    )
+    original_requirements["torch"] = reproduction_information["environment"][
+        "pytorch_version"
+    ]
+
+    package_names = sorted(requirements.keys() | original_requirements.keys())
+
+    for package_name in package_names:
+        verify(
+            package_mismatches,
+            package_name,
+            requirements.get(package_name),
+            original_requirements.get(package_name),
+            get_package_mismatch_severity(package_name),
+        )
+
+    if system_mismatches or package_mismatches:
+        print()
+        print(
+            (
+                "[yellow]Your local environment doesn't perfectly match the environment "
+                "used to produce the original model. The following components differ:[/]"
+            )
+        )
+
+    if system_mismatches:
+        table = Table()
+        table.add_column("Component")
+        table.add_column("This system", overflow="fold")
+        table.add_column("Original system", overflow="fold")
+        table.add_column("Severity", width=8)
+
+        for component, this, original, severity in system_mismatches:
+            table.add_row(f"[bold]{component}[/]", this, original, severity)
+
+        print()
+        print("[bold]System Mismatches[/]")
+        print(table)
+
+    if package_mismatches:
+        table = Table()
+        table.add_column("Package")
+        table.add_column("This system", overflow="fold")
+        table.add_column("Original system", overflow="fold")
+        table.add_column("Severity", width=8)
+
+        for package, this, original, severity in package_mismatches:
+            table.add_row(f"[bold]{package}[/]", this, original, severity)
+
+        print()
+        print("[bold]Package Mismatches[/]")
+        print(table)
+
+    if system_mismatches or package_mismatches:
+        print()
+        print(
+            (
+                f"There is a {cast(MismatchSeverity, mismatch_severity).__rich__()} chance "
+                "that reproduction won't produce a byte-for-byte identical model. "
+                "However, the resulting model will very likely still behave similarly "
+                "to the original model."
+            )
+        )
+
+        print()
+        choice = prompt_select(
+            "How would you like to proceed?",
+            [
+                Choice(
+                    title="Attempt to reproduce the model anyway",
+                    value=True,
+                ),
+                Choice(
+                    title="Exit program",
+                    value=False,
+                ),
+            ],
+        )
+
+        return choice
+    else:
+        # There are no mismatches at all, so there is nothing to confirm.
+        return True

src/heretic/utils.py

@@ -2,11 +2,13 @@
 # Copyright (C) 2025-2026  Philipp Emanuel Weidmann <pew@worldwidemann.com> + contributors
 
 import getpass
+import hashlib
 import json
 import os
 import platform
 import random
 import tempfile
+import traceback
 from dataclasses import dataclass
 from datetime import datetime, timezone
 from importlib.metadata import version
@@ -24,6 +26,7 @@ from datasets.download.download_manager import DownloadMode
 from datasets.utils.info_utils import VerificationMode
 from huggingface_hub.utils import validate_repo_id
 from optuna import Trial
+from optuna.trial import FrozenTrial
 from psutil import Process
 from questionary import Choice, Style
 from rich.console import Console
@@ -170,10 +173,23 @@ def format_duration(seconds: float) -> str:
         return f"{seconds}s"
 
 
+def format_exception(error: Exception) -> str:
+    # Walk causal chain to find a non-empty message.
+    current = error
+    while current is not None:
+        message = str(current).strip()
+        if message:
+            return message
+        current = current.__cause__ or current.__context__
+
+    # If there is no message in the entire causal chain, fall back to the complete traceback.
+    return traceback.format_exc().strip()
+
+
 def is_hf_path(path: str) -> bool:
     """Checks whether a path likely refers to a Hugging Face repository."""
 
-    # Match Transformers: existing local paths take precedence over Hub lookup,
+    # Match Transformers: Existing local paths take precedence over Hub lookup,
     # even if the path string is also a valid repository ID.
     if Path(path).exists():
         return False
@@ -193,12 +209,15 @@ def get_split_slice(split_str: str, length: int) -> tuple[int, int]:
 
     # The split name is the part before the slice, e.g. "train" in "train[:400]".
     split_name = split_str.split("[")[0]
+
     # Associate the split with its number of examples (lines).
     name_to_length = {split_name: length}
+
     # Convert the instructions to absolute indices and select the first one.
     absolute_instruction = ReadInstruction.from_spec(split_str).to_absolute(
         name_to_length
     )[0]
+
     return absolute_instruction.from_, absolute_instruction.to
 
 
@@ -285,7 +304,7 @@ def batchify(items: list[T], batch_size: int) -> list[list[T]]:
     return [items[i : i + batch_size] for i in range(0, len(items), batch_size)]
 
 
-def get_trial_parameters(trial: Trial) -> dict[str, str]:
+def get_trial_parameters(trial: Trial | FrozenTrial) -> dict[str, str]:
     params = {}
 
     direction_index = trial.user_attrs["direction_index"]
@@ -302,7 +321,7 @@ def get_trial_parameters(trial: Trial) -> dict[str, str]:
 
 def get_readme_intro(
     settings: Settings,
-    trial: Trial,
+    trial: Trial | FrozenTrial,
     contains_reproducibility_information: bool,
 ) -> str:
     if is_hf_path(settings.model):
@@ -323,7 +342,7 @@ def get_readme_intro(
 
     return f"""# This is a decensored version of {
         model_link
-    }, made using [Heretic](https://github.com/p-e-w/heretic) v{version("heretic-llm")}
+    }, made using [Heretic](https://heretic-project.org) v{version("heretic-llm")}
 {reproducibility_instructions}
 ## Abliteration parameters
 
@@ -394,7 +413,7 @@ def format_hf_link(
 def generate_reproduce_readme(
     settings: Settings,
     checkpoint_filename: str,
-    trial: Trial,
+    trial: Trial | FrozenTrial,
     include_system_information: bool,
 ) -> str:
     """Generates the contents of a README.md for the reproduce/ folder."""
@@ -546,13 +565,18 @@ This directory contains the necessary information and assets to reproduce the re
 
 ## How to reproduce
 
+> [!TIP]
+> You can automate this process, including all verification steps, by downloading the `reproduce.json` file and running
+> `heretic --reproduce reproduce.json`.
+
 {system_instructions}1. Install the exact version of Heretic indicated in the **Environment** section above, from its original source.
 1. Install the packages listed in `requirements.txt`: `pip install -r requirements.txt`
 1. Install the correct version of PyTorch: `{pytorch_install_command}`
 1. Place the provided `config.toml` in your working directory.
 1. Run Heretic without any additional arguments: `heretic`
 1. Wait for the run to finish, then select trial **{trial.user_attrs["index"]}** and export the model.
-1. Verify that the weight files have been exactly reproduced by comparing their SHA-256 hashes against those in `SHA256SUMS`: `sha256sum -c SHA256SUMS` (or look at the hashes online if you uploaded to Hugging Face)
+1. Verify that the weight files have been exactly reproduced by comparing their SHA-256 hashes against those in `SHA256SUMS`:
+   `sha256sum -c SHA256SUMS` (or look at the hashes online if you uploaded to Hugging Face)
 
 > [!TIP]
 > To use the included Optuna study journal `{checkpoint_filename}`, place it in the checkpoints directory (usually `checkpoints/`) before running Heretic.
@@ -563,7 +587,7 @@ This directory contains the necessary information and assets to reproduce the re
 
 def generate_reproduce_json(
     settings: Settings,
-    trial: Trial,
+    trial: Trial | FrozenTrial,
     timestamp: str,
     uploaded_model_hashes: dict[str, str],
     include_system_information: bool,
@@ -573,7 +597,7 @@ def generate_reproduce_json(
     version_info = get_heretic_version_info()
 
     data = {
-        "version": "1",  # Version number of the reproduce.json file format, to allow for future changes.
+        "version": "2",  # Version number of the reproduce.json file format, to allow for future changes.
         "timestamp": timestamp,
         "system": None,  # Defined here to preserve insertion order.
         "environment": {
@@ -627,11 +651,23 @@ def generate_sha256sums(hashes: dict[str, str]) -> str:
     return "\n".join(lines) + "\n"
 
 
+# TODO: Replace this with hashlib.file_digest when we drop support for Python 3.10.
+def get_file_sha256(file_path: str | Path) -> str:
+    hash = hashlib.sha256()
+
+    with open(file_path, "rb") as file:
+        # Read the file in 64 kB blocks.
+        for block in iter(lambda: file.read(65536), b""):
+            hash.update(block)
+
+    return hash.hexdigest()
+
+
 def create_reproduce_folder(
     path: Path,
     settings: Settings,
     checkpoint_path: str | Path,
-    trial: Trial,
+    trial: Trial | FrozenTrial,
     uploaded_model_hashes: dict[str, str],
     include_system_information: bool,
 ):
@@ -705,7 +741,7 @@ def upload_reproduce_folder(
     settings: Settings,
     token: str,
     checkpoint_path: str | Path,
-    trial: Trial,
+    trial: Trial | FrozenTrial,
     include_system_information: bool,
 ):
     api = huggingface_hub.HfApi()

uv.lock

@@ -8,7 +8,7 @@ resolution-markers = [
 ]
 
 [options]
-exclude-newer = "2026-05-28T06:40:14.509192809Z"
+exclude-newer = "0001-01-01T00:00:00Z" # This has no effect and is included for backwards compatibility when using relative exclude-newer values.
 exclude-newer-span = "P7D"
 
 [[package]]
@@ -2624,59 +2624,59 @@ wheels = [
 
 [[package]]
 name = "pyarrow"
-version = "22.0.0"
+version = "23.0.1"
 source = { registry = "https://pypi.org/simple" }
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+sdist = { url = "https://files.pythonhosted.org/packages/88/22/134986a4cc224d593c1afde5494d18ff629393d74cc2eddb176669f234a4/pyarrow-23.0.1.tar.gz", hash = "sha256:b8c5873e33440b2bc2f4a79d2b47017a89c5a24116c055625e6f2ee50523f019", size = 1167336, upload-time = "2026-02-16T10:14:12.39Z" }
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