3290828905
fetchPypi doesn't use python under the hood and doesn't need to be tied to a specific version of python. Moving it to top level makes it more consistent with other fetchers and makes code generation easier.
103 lines
3.9 KiB
Nix
103 lines
3.9 KiB
Nix
{ pkgs
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, stdenv
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, lib
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, python
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}:
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self:
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let
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inherit (self) callPackage;
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inherit (python.passthru) isPy27 isPy37 isPy38 isPy39 isPy310 isPy311 isPy3k isPyPy pythonAtLeast pythonOlder;
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namePrefix = python.libPrefix + "-";
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# Derivations built with `buildPythonPackage` can already be overridden with `override`, `overrideAttrs`, and `overrideDerivation`.
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# This function introduces `overridePythonAttrs` and it overrides the call to `buildPythonPackage`.
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makeOverridablePythonPackage = f: origArgs:
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let
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ff = f origArgs;
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overrideWith = newArgs: origArgs // (if pkgs.lib.isFunction newArgs then newArgs origArgs else newArgs);
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in
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if builtins.isAttrs ff then (ff // {
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overridePythonAttrs = newArgs: makeOverridablePythonPackage f (overrideWith newArgs);
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})
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else if builtins.isFunction ff then {
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overridePythonAttrs = newArgs: makeOverridablePythonPackage f (overrideWith newArgs);
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__functor = self: ff;
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}
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else ff;
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buildPythonPackage = makeOverridablePythonPackage (lib.makeOverridable (callPackage ./mk-python-derivation.nix {
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inherit namePrefix; # We want Python libraries to be named like e.g. "python3.6-${name}"
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inherit toPythonModule; # Libraries provide modules
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}));
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buildPythonApplication = makeOverridablePythonPackage (lib.makeOverridable (callPackage ./mk-python-derivation.nix {
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namePrefix = ""; # Python applications should not have any prefix
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toPythonModule = x: x; # Application does not provide modules.
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}));
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# See build-setupcfg/default.nix for documentation.
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buildSetupcfg = import ../../../build-support/build-setupcfg self;
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# Check whether a derivation provides a Python module.
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hasPythonModule = drv: drv?pythonModule && drv.pythonModule == python;
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# Get list of required Python modules given a list of derivations.
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requiredPythonModules = drvs: let
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modules = lib.filter hasPythonModule drvs;
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in lib.unique ([python] ++ modules ++ lib.concatLists (lib.catAttrs "requiredPythonModules" modules));
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# Create a PYTHONPATH from a list of derivations. This function recurses into the items to find derivations
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# providing Python modules.
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makePythonPath = drvs: lib.makeSearchPath python.sitePackages (requiredPythonModules drvs);
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removePythonPrefix = lib.removePrefix namePrefix;
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# Convert derivation to a Python module.
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toPythonModule = drv:
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drv.overrideAttrs( oldAttrs: {
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# Use passthru in order to prevent rebuilds when possible.
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passthru = (oldAttrs.passthru or {})// {
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pythonModule = python;
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pythonPath = [ ]; # Deprecated, for compatibility.
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requiredPythonModules = requiredPythonModules drv.propagatedBuildInputs;
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};
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});
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# Convert a Python library to an application.
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toPythonApplication = drv:
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drv.overrideAttrs( oldAttrs: {
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passthru = (oldAttrs.passthru or {}) // {
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# Remove Python prefix from name so we have a "normal" name.
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# While the prefix shows up in the store path, it won't be
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# used by `nix-env`.
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name = removePythonPrefix oldAttrs.name;
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pythonModule = false;
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};
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});
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disabled = drv: throw "${removePythonPrefix (drv.pname or drv.name)} not supported for interpreter ${python.executable}";
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disabledIf = x: drv: if x then disabled drv else drv;
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in {
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inherit lib pkgs stdenv;
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inherit (python.passthru) isPy27 isPy37 isPy38 isPy39 isPy310 isPy311 isPy3k isPyPy pythonAtLeast pythonOlder;
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inherit buildPythonPackage buildPythonApplication;
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inherit (pkgs) fetchPypi;
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inherit hasPythonModule requiredPythonModules makePythonPath disabled disabledIf;
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inherit toPythonModule toPythonApplication;
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inherit buildSetupcfg;
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python = toPythonModule python;
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# Dont take pythonPackages from "global" pkgs scope to avoid mixing python versions
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pythonPackages = self;
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# Remove?
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recursivePthLoader = toPythonModule (callPackage ../../../development/python-modules/recursive-pth-loader { });
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}
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