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https://github.com/tahoe-lafs/tahoe-lafs.git
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70 lines
2.9 KiB
Nix
70 lines
2.9 KiB
Nix
let
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sources = import nix/sources.nix;
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in
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{ pkgsVersion ? "nixpkgs-21.11"
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, pkgs ? import sources.${pkgsVersion} { }
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, pypiData ? sources.pypi-deps-db
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, pythonVersion ? "python37"
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, mach-nix ? import sources.mach-nix {
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inherit pkgs pypiData;
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python = pythonVersion;
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}
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}:
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# The project name, version, and most other metadata are automatically
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# extracted from the source. Some requirements are not properly extracted
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# and those cases are handled below. The version can only be extracted if
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# `setup.py update_version` has been run (this is not at all ideal but it
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# seems difficult to fix) - so for now just be sure to run that first.
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mach-nix.buildPythonPackage {
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# Define the location of the Tahoe-LAFS source to be packaged. Clean up all
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# as many of the non-source files (eg the `.git` directory, `~` backup
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# files, nix's own `result` symlink, etc) as possible to avoid needing to
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# re-build when files that make no difference to the package have changed.
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src = pkgs.lib.cleanSource ./.;
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# Define some extra requirements that mach-nix does not automatically detect
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# from inspection of the source. We typically don't need to put version
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# constraints on any of these requirements. The pypi-deps-db we're
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# operating with makes dependency resolution deterministic so as long as it
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# works once it will always work. It could be that in the future we update
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# pypi-deps-db and an incompatibility arises - in which case it would make
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# sense to apply some version constraints here.
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requirementsExtra = ''
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# mach-nix does not yet support pyproject.toml which means it misses any
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# build-time requirements of our dependencies which are declared in such a
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# file. Tell it about them here.
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setuptools_rust
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# mach-nix does not yet parse environment markers correctly. It misses
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# all of our requirements which have an environment marker. Duplicate them
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# here.
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foolscap
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eliot
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pyrsistent
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'';
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# Specify where mach-nix should find packages for our Python dependencies.
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# There are some reasonable defaults so we only need to specify certain
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# packages where the default configuration runs into some issue.
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providers = {
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# Through zfec 1.5.5 the wheel has an incorrect runtime dependency
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# declared on argparse, not available for recent versions of Python 3.
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# Force mach-nix to use the sdist instead. This allows us to apply a
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# patch that removes the offending declaration.
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zfec = "sdist";
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};
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# Define certain overrides to the way Python dependencies are built.
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_ = {
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# Apply the argparse declaration fix to zfec sdist.
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zfec.patches = with pkgs; [
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(fetchpatch {
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name = "fix-argparse.patch";
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url = "https://github.com/tahoe-lafs/zfec/commit/c3e736a72cccf44b8e1fb7d6c276400204c6bc1e.patch";
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sha256 = "1md9i2fx1ya7mgcj9j01z58hs3q9pj4ch5is5b5kq4v86cf6x33x";
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})
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];
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};
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}
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