push sheeet

pkgs/development/interpreters/python/meta-package.nix

@@ -0,0 +1,58 @@
+{
+  buildPythonPackage,
+  lib,
+  hatchling,
+}:
+{
+  pname,
+  version,
+  dependencies ? [ ],
+  optional-dependencies ? { },
+  passthru ? { },
+  meta ? { },
+}:
+
+# Create a "fake" meta package to satisfy a dependency on a package, but don't actually build it.
+# This is useful for packages that have a split binary/source dichotomy like psycopg2/psycopg2-binary,
+# where we want to use the former, but some projects declare a dependency on the latter.
+
+buildPythonPackage {
+  inherit
+    pname
+    version
+    dependencies
+    optional-dependencies
+    meta
+    passthru
+    ;
+
+  pyproject = true;
+
+  # Make a minimal pyproject.toml that can be built
+  unpackPhase = ''
+    cat > pyproject.toml << EOF
+    [project]
+    name = "${pname}"
+    version = "${version}"
+    dependencies = ${builtins.toJSON (map lib.getName dependencies)}
+
+    [project.optional-dependencies]
+    ${lib.optionalString (optional-dependencies != { }) (
+      lib.concatStringsSep "\n" (
+        lib.mapAttrsToList (
+          group: deps: group + " = " + builtins.toJSON (map lib.getName deps)
+        ) optional-dependencies
+      )
+    )}
+
+    [tool.hatch.build.targets.wheel]
+    bypass-selection = true
+
+    [build-system]
+    requires = ["hatchling"]
+    build-backend = "hatchling.build"
+    EOF
+  '';
+
+  build-system = [ hatchling ];
+}