e0816431a2
Otherwise references to the Python interpreter inside the set are wrong, as demonstrated by:
``` nix
with import <nixpkgs> { };
let
python' = python3.override {
packageOverrides = final: prev: { requests = prev.requests.overridePythonAttrs(old: { version = "1337"; }); };
};
in python'.pkgs.python.pkgs.requests
```
which returns the _non_ overriden requests.
And the same with `self`:
```
with import <nixpkgs> { };
let
python' = python3.override {
self = python';
packageOverrides = final: prev: { requests = prev.requests.overridePythonAttrs(old: { version = "1337"; }); };
};
in python'.pkgs.python.pkgs.requests
```
which returns the overriden requests.
This can manifest itself as file collisions when constructing environments or as subtly incorrect dependency graphs.
59 lines
2.1 KiB
Nix
59 lines
2.1 KiB
Nix
{ lib, python3, fetchFromGitHub }:
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let
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newPackageOverrides =
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self: super: {
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poetry = self.callPackage ./unwrapped.nix { };
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# The versions of Poetry and poetry-core need to match exactly,
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# and poetry-core in nixpkgs requires a staging cycle to be updated,
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# so apply an override here.
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#
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# We keep the override around even when the versions match, as
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# it's likely to become relevant again after the next Poetry update.
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poetry-core = super.poetry-core.overridePythonAttrs (old: rec {
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version = "1.9.0";
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src = fetchFromGitHub {
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owner = "python-poetry";
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repo = "poetry-core";
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rev = "refs/tags/${version}";
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hash = "sha256-vvwKbzGlvv2LTbXfJxQVM3nUXFGntgJxsku6cbRxCzw=";
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};
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});
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} // (plugins self);
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python = python3.override (old: {
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self = python;
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packageOverrides = lib.composeManyExtensions
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((if old ? packageOverrides then [ old.packageOverrides ] else [ ]) ++ [ newPackageOverrides ]);
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});
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plugins = ps: with ps; {
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poetry-audit-plugin = callPackage ./plugins/poetry-audit-plugin.nix { };
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poetry-plugin-export = callPackage ./plugins/poetry-plugin-export.nix { };
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poetry-plugin-up = callPackage ./plugins/poetry-plugin-up.nix { };
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poetry-plugin-poeblix = callPackage ./plugins/poetry-plugin-poeblix.nix { };
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};
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# selector is a function mapping pythonPackages to a list of plugins
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# e.g. poetry.withPlugins (ps: with ps; [ poetry-plugin-up ])
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withPlugins = selector: let
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selected = selector (plugins python.pkgs);
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in python.pkgs.toPythonApplication (python.pkgs.poetry.overridePythonAttrs (old: {
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propagatedBuildInputs = old.propagatedBuildInputs ++ selected;
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# save some build time when adding plugins by disabling tests
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doCheck = selected == [ ];
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# Propagating dependencies leaks them through $PYTHONPATH which causes issues
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# when used in nix-shell.
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postFixup = ''
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rm $out/nix-support/propagated-build-inputs
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'';
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passthru = {
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plugins = plugins python.pkgs;
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inherit withPlugins python;
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};
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}));
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in withPlugins (ps: [ ])
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