Fix pykms by downgrading to python 3.11

overlays/default.nix

@@ -6,4 +6,8 @@ let
 in
 {
   actual-server = prev.callPackage ./actualbudget { };
+
+  # Copied entire package from nixpkgs to downgrade to python 3.11 since 3.12 is broken.
+  # See: https://github.com/Py-KMS-Organization/py-kms/issues/117
+  pykms = prev.callPackage ./pykms.nix { };
 }

overlays/pykms.nix

@@ -0,0 +1,103 @@
+{ lib
+, fetchFromGitHub
+, python311
+, writeText
+, writeShellScript
+, sqlite
+, nixosTests
+}:
+let
+  pypkgs = python311.pkgs;
+
+  dbSql = writeText "create_pykms_db.sql" ''
+    CREATE TABLE clients(
+      clientMachineId TEXT,
+      machineName     TEXT,
+      applicationId   TEXT,
+      skuId           TEXT,
+      licenseStatus   TEXT,
+      lastRequestTime INTEGER,
+      kmsEpid         TEXT,
+      requestCount    INTEGER
+    );
+  '';
+
+  dbScript = writeShellScript "create_pykms_db.sh" ''
+    set -eEuo pipefail
+
+    db=''${1:-/var/lib/pykms/clients.db}
+
+    if [ ! -e $db ] ; then
+      ${lib.getBin sqlite}/bin/sqlite3 $db < ${dbSql}
+    fi
+  '';
+
+in
+pypkgs.buildPythonApplication rec {
+  pname = "pykms";
+  version = "unstable-2024-05-28";
+
+  src = fetchFromGitHub {
+    owner = "Py-KMS-Organization";
+    repo = "py-kms";
+    rev = "646f4766f4195dbea0695700a7ddaac70a3294f9";
+    hash = "sha256-YCqPo7WkCfXyuTjL4IYapdcUN/Vj465Jz6XhQessyz0=";
+  };
+
+  sourceRoot = "${src.name}/py-kms";
+
+  propagatedBuildInputs = with pypkgs; [
+    systemd
+    pytz
+    tzlocal
+    dnspython
+  ];
+
+  postPatch = ''
+    siteDir=$out/${python311.sitePackages}
+
+    substituteInPlace pykms_DB2Dict.py \
+      --replace "'KmsDataBase.xml'" "'$siteDir/KmsDataBase.xml'"
+  '';
+
+  format = "other";
+
+  # there are no tests
+  doCheck = false;
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $siteDir
+
+    PYTHONPATH="$PYTHONPATH:$siteDir"
+
+    mv * $siteDir
+    for b in Client Server ; do
+      makeWrapper ${python311.interpreter} $out/bin/''${b,,} \
+        --argv0 pykms-''${b,,} \
+        --add-flags $siteDir/pykms_$b.py \
+        --set PYTHONPATH $PYTHONPATH
+    done
+
+    install -Dm755 ${dbScript} $out/libexec/create_pykms_db.sh
+
+    install -Dm644 ../README.md -t $out/share/doc/pykms
+
+    ${python311.interpreter} -m compileall $siteDir
+
+    runHook postInstall
+  '';
+
+  passthru.tests = { inherit (nixosTests) pykms; };
+
+  meta = with lib; {
+    description = "Windows KMS (Key Management Service) server written in Python";
+    homepage = "https://github.com/Py-KMS-Organization/py-kms";
+    license = licenses.unlicense;
+    maintainers = with maintainers; [
+      peterhoeg
+      zopieux
+    ];
+  };
+}