initial commit

1 files changed, 52 insertions, 0 deletions

diff --git a/modules/python.nix b/modules/python.nix
new file mode 100644
index 0000000..ce1154c
--- /dev/null
+++ b/modules/python.nix
@@ -0,0 +1,52 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.python;
+  pythonWithPackages = (cfg.python.withPackages cfg.packages).override {
+    ignoreCollisions = cfg.ignoreCollisions;
+  };
+in {
+  options.python = {
+    enable = mkEnableOption { name = "python"; };
+
+    python = mkOption {
+      type = types.package;
+      default = pkgs.python3;
+      defaultText = literalExample "pkgs.python3Minimal";
+      description = ''
+        The package providing python.
+        Use this option to set the version of Python.
+      '';
+      example = literalExample "pkgs.python310";
+    };
+
+    packages = mkOption {
+      type = with types; functionTo (listOf package);
+      default = _: [ ];
+      defaultText = literalExample "_: []";
+      description = ''
+        Python packages that will be made available to the environment.
+      '';
+      example = literalExample ''
+        pythonPackages: with pythonPackages; [
+             requests (callPackage ./my-package.nix {})
+        ];
+      '';
+    };
+
+    ignoreCollisions = mkEnableOption "ignoring collisions when building the Python environnement";
+  };
+
+  config = mkIf cfg.enable {
+    buildInputs = [ pythonWithPackages ];
+    # shellHook = ''
+    #   # Tells pip to put packages into $PIP_PREFIX instead of the usual locations.
+    #   # See https://pip.pypa.io/en/stable/user_guide/#environment-variables.
+    #   export PIP_PREFIX=$(pwd)/_build/pip_packages
+    #   export PYTHONPATH="$PIP_PREFIX/${cfg.python.sitePackages}:$PYTHONPATH"
+    #   export PATH="$PIP_PREFIX/bin:$PATH"
+    #   unset SOURCE_DATE_EPOCH
+    # '';
+  };
+}