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80 lines
2.7 KiB
80 lines
2.7 KiB
5 years ago
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{ lib, pkgs }:
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let
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inherit (import ./semver.nix { inherit lib; }) satisfiesSemver;
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# Returns true if pythonVersion matches with the expression in pythonVersions
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isCompatible = pythonVersion: pythonVersions:
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let
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operators = {
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"||" = cond1: cond2: cond1 || cond2;
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"," = cond1: cond2: cond1 && cond2; # , means &&
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};
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# split string at "," and "||"
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tokens = builtins.filter (x: x != "") (builtins.split "(,|\\|\\|)" pythonVersions);
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combine = acc: v:
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let
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isOperator = builtins.typeOf v == "list";
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operator = if isOperator then (builtins.elemAt v 0) else acc.operator;
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in
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if isOperator then (acc // { inherit operator; }) else {
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inherit operator;
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state = operators."${operator}" acc.state (satisfiesSemver pythonVersion v);
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};
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initial = { operator = ","; state = true; };
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in
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(builtins.foldl' combine initial tokens).state;
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readTOML = path: builtins.fromTOML (builtins.readFile path);
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#
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# Returns the appropriate manylinux dependencies and string representation for the file specified
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#
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getManyLinuxDeps = f:
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let
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ml = pkgs.pythonManylinuxPackages;
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in
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if lib.strings.hasInfix "manylinux1" f then { pkg = [ ml.manylinux1 ]; str = "1"; }
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else if lib.strings.hasInfix "manylinux2010" f then { pkg = [ ml.manylinux2010 ]; str = "2010"; }
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else if lib.strings.hasInfix "manylinux2014" f then { pkg = [ ml.manylinux2014 ]; str = "2014"; }
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else { pkg = []; str = null; };
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# Fetch the artifacts from the PyPI index. Since we get all
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# info we need from the lock file we don't use nixpkgs' fetchPyPi
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# as it modifies casing while not providing anything we don't already
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# have.
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#
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# Args:
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# pname: package name
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# file: filename including extension
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# hash: SRI hash
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# kind: Language implementation and version tag https://www.python.org/dev/peps/pep-0427/#file-name-convention
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fetchFromPypi = lib.makeOverridable (
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{ pname, file, hash, kind }:
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pkgs.fetchurl {
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url = "https://files.pythonhosted.org/packages/${kind}/${lib.toLower (builtins.substring 0 1 file)}/${pname}/${file}";
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inherit hash;
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}
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);
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getBuildSystemPkgs =
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{ pythonPackages
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, pyProject
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}: let
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buildSystem = lib.getAttrFromPath [ "build-system" "build-backend" ] pyProject;
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drvAttr = builtins.elemAt (builtins.split "\\.|:" buildSystem) 0;
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in
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if buildSystem == "" then [] else (
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[ pythonPackages.${drvAttr} or (throw "unsupported build system ${buildSystem}") ]
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);
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in
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{
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inherit
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fetchFromPypi
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getManyLinuxDeps
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isCompatible
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readTOML
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getBuildSystemPkgs
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;
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}
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