uv: init module

modules/programs/uv.nix

@@ -0,0 +1,56 @@
+{
+  pkgs,
+  config,
+  lib,
+  ...
+}:
+
+let
+
+  inherit (lib)
+    mkEnableOption
+    mkPackageOption
+    mkOption
+    literalExpression
+    ;
+
+  tomlFormat = pkgs.formats.toml { };
+  cfg = config.programs.uv;
+
+in
+{
+  meta.maintainers = with lib.maintainers; [ mirkolenz ];
+
+  options.programs.uv = {
+    enable = mkEnableOption "uv";
+
+    package = mkPackageOption pkgs "uv" { };
+
+    settings = mkOption {
+      type = tomlFormat.type;
+      default = { };
+      example = literalExpression ''
+        {
+          python-downloads = "never";
+          python-preference = "only-system";
+          pip.index-url = "https://test.pypi.org/simple";
+        }
+      '';
+      description = ''
+        Configuration written to
+        {file}`$XDG_CONFIG_HOME/uv/uv.toml`.
+        See <https://docs.astral.sh/uv/configuration/files/>
+        and <https://docs.astral.sh/uv/reference/settings/>
+        for more information.
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    home.packages = [ cfg.package ];
+
+    xdg.configFile."uv/uv.toml" = lib.mkIf (cfg.settings != { }) {
+      source = tomlFormat.generate "uv-config" cfg.settings;
+    };
+  };
+}