107 lines
3 KiB
Python
107 lines
3 KiB
Python
# This script implements the workspace inheritance mechanism described
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# here: https://doc.rust-lang.org/cargo/reference/workspaces.html#the-package-table
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#
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# Please run `mypy --strict`, `black`, and `isort --profile black` on this after editing, thanks!
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import sys
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from typing import Any
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import tomli
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import tomli_w
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def load_file(path: str) -> dict[str, Any]:
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with open(path, "rb") as f:
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return tomli.load(f)
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def replace_key(
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workspace_manifest: dict[str, Any], table: dict[str, Any], section: str, key: str
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) -> bool:
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if (
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isinstance(table[key], dict)
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and "workspace" in table[key]
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and table[key]["workspace"] is True
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):
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print("replacing " + key)
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replaced = table[key]
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del replaced["workspace"]
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workspace_copy = workspace_manifest[section][key]
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if section == "dependencies":
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crate_features = replaced.get("features")
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if type(workspace_copy) is str:
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replaced["version"] = workspace_copy
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else:
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replaced.update(workspace_copy)
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merged_features = (crate_features or []) + (
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workspace_copy.get("features") or []
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)
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if len(merged_features) > 0:
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# Dictionaries are guaranteed to be ordered (https://stackoverflow.com/a/7961425)
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replaced["features"] = list(dict.fromkeys(merged_features))
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elif section == "package":
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table[key] = replaced = workspace_copy
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return True
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return False
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def replace_dependencies(
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workspace_manifest: dict[str, Any], root: dict[str, Any]
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) -> bool:
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changed = False
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for key in ["dependencies", "dev-dependencies", "build-dependencies"]:
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if key in root:
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for k in root[key].keys():
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changed |= replace_key(workspace_manifest, root[key], "dependencies", k)
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return changed
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def main() -> None:
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top_cargo_toml = load_file(sys.argv[2])
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if "workspace" not in top_cargo_toml:
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# If top_cargo_toml is not a workspace manifest, then this script was probably
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# ran on something that does not actually use workspace dependencies
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print(f"{sys.argv[2]} is not a workspace manifest, doing nothing.")
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return
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crate_manifest = load_file(sys.argv[1])
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workspace_manifest = top_cargo_toml["workspace"]
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if "workspace" in crate_manifest:
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return
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changed = False
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for key in crate_manifest["package"].keys():
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changed |= replace_key(
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workspace_manifest, crate_manifest["package"], "package", key
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)
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changed |= replace_dependencies(workspace_manifest, crate_manifest)
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if "target" in crate_manifest:
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for key in crate_manifest["target"].keys():
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changed |= replace_dependencies(
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workspace_manifest, crate_manifest["target"][key]
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)
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if not changed:
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return
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with open(sys.argv[1], "wb") as f:
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tomli_w.dump(crate_manifest, f)
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if __name__ == "__main__":
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main()
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