diff --git a/pkgs/development/python-modules/pymitsubishi/default.nix b/pkgs/development/python-modules/pymitsubishi/default.nix
index 82ab38deb2ad..181e2a716eeb 100644
--- a/pkgs/development/python-modules/pymitsubishi/default.nix
+++ b/pkgs/development/python-modules/pymitsubishi/default.nix
@@ -18,9 +18,14 @@ buildPythonPackage rec {
     owner = "pymitsubishi";
     repo = "pymitsubishi";
     tag = "v${version}";
-    hash = "sha256-QjHMIzl2VV1S8tNWsFLgLDNX6/0wN9FeIJIo5KgkDVE=";
+    hash = "sha256-frqyAXAP2O8TZzXx5ephcLSLJA9p0P74KJrPoSKPYYo=";
   };
 
+  postPatch = ''
+    # make sure pyproject.toml specifies the correct version
+    grep -qF 'version = "${version}"' pyproject.toml
+  '';
+
   build-system = [ setuptools ];
 
   dependencies = [
diff --git a/pkgs/servers/home-assistant/build-custom-component/check_manifest.py b/pkgs/servers/home-assistant/build-custom-component/check_manifest.py
index c2a41584effc..7091f49800af 100644
--- a/pkgs/servers/home-assistant/build-custom-component/check_manifest.py
+++ b/pkgs/servers/home-assistant/build-custom-component/check_manifest.py
@@ -68,7 +68,7 @@ def main(args):
     # At least one manifest should match the component name
     ok &= any(check_derivation_name(manifest) for manifest in manifests)
 
-    # All requirements need to match, use `ignoreRequirementVersion` to ignore too strict version constraints
+    # All requirements need to match, use `ignoreVersionRequirement` to ignore too strict version constraints
     ok &= all(
         check_requirements(manifest, args.ignore_version_requirement)
         for manifest in manifests
diff --git a/pkgs/servers/home-assistant/build-custom-component/default.nix b/pkgs/servers/home-assistant/build-custom-component/default.nix
index 9a49355b2320..8d249bfa199c 100644
--- a/pkgs/servers/home-assistant/build-custom-component/default.nix
+++ b/pkgs/servers/home-assistant/build-custom-component/default.nix
@@ -41,13 +41,13 @@ home-assistant.python.pkgs.buildPythonPackage (
       runHook postInstall
     '';
 
-    nativeCheckInputs =
+    nativeBuildInputs =
       with home-assistant.python.pkgs;
       [
         manifestRequirementsCheckHook
         packaging
       ]
-      ++ (args.nativeCheckInputs or [ ]);
+      ++ (args.nativeBuildInputs or [ ]);
 
     passthru = {
       isHomeAssistantComponent = true;
diff --git a/pkgs/servers/home-assistant/custom-components/mitsubishi/package.nix b/pkgs/servers/home-assistant/custom-components/mitsubishi/package.nix
index 8fd8dcde5d3c..193d4fa377f9 100644
--- a/pkgs/servers/home-assistant/custom-components/mitsubishi/package.nix
+++ b/pkgs/servers/home-assistant/custom-components/mitsubishi/package.nix
@@ -11,13 +11,13 @@
 buildHomeAssistantComponent rec {
   owner = "pymitsubishi";
   domain = "mitsubishi";
-  version = "0.4.0";
+  version = "0.4.2";
 
   src = fetchFromGitHub {
     owner = "pymitsubishi";
     repo = "homeassistant-mitsubishi";
     tag = "v${version}";
-    hash = "sha256-VEV+HOzXrxX2rsStjwXD4ZWclP2oF6zZHv0MuzL8DE4=";
+    hash = "sha256-c1KnFpRK5dH7ZGsDuJD6Awa0xhxYYZxC4zCjoRdpOns=";
   };
 
   dependencies = [
diff --git a/pkgs/servers/home-assistant/custom-components/rct_power/package.nix b/pkgs/servers/home-assistant/custom-components/rct_power/package.nix
index c9d04886b0df..d22d017e53c2 100644
--- a/pkgs/servers/home-assistant/custom-components/rct_power/package.nix
+++ b/pkgs/servers/home-assistant/custom-components/rct_power/package.nix
@@ -8,12 +8,12 @@
 buildHomeAssistantComponent rec {
   owner = "weltenwort";
   domain = "rct_power";
-  version = "v0.14.1";
+  version = "0.14.1";
 
   src = fetchFromGitHub {
     owner = "weltenwort";
     repo = "home-assistant-rct-power-integration";
-    tag = version;
+    tag = "v${version}";
     hash = "sha256-wM66MyRhBsMfUr+KlqV4jSuXcnKfW0fkbDAyuU2crsc=";
   };
 
@@ -21,6 +21,11 @@ buildHomeAssistantComponent rec {
     rctclient
   ];
 
+  ignoreVersionRequirement = [
+    # rctclient 0.0.4 was never published on PyPI
+    "rctclient"
+  ];
+
   doCheck = false; # no tests
 
   meta = with lib; {
diff --git a/pkgs/servers/home-assistant/custom-components/volkswagen_we_connect_id/package.nix b/pkgs/servers/home-assistant/custom-components/volkswagen_we_connect_id/package.nix
deleted file mode 100644
index 2077213c1ed3..000000000000
--- a/pkgs/servers/home-assistant/custom-components/volkswagen_we_connect_id/package.nix
+++ /dev/null
@@ -1,36 +0,0 @@
-{
-  ascii-magic,
-  buildHomeAssistantComponent,
-  fetchFromGitHub,
-  lib,
-  weconnect,
-}:
-
-buildHomeAssistantComponent rec {
-  owner = "mitch-dc";
-  domain = "volkswagen_we-connect_id";
-  version = "0.2.6";
-
-  src = fetchFromGitHub {
-    inherit owner;
-    repo = "volkswagen_we_connect_id";
-    tag = "v${version}";
-    hash = "sha256-f5guxLE93QtTPV1zw1313bzF521pVr0vsUa3hzcRmJo=";
-  };
-
-  dependencies = [
-    ascii-magic
-    weconnect
-  ];
-
-  # upstream has no tests
-  doCheck = false;
-
-  meta = {
-    changelog = "https://github.com/mitch-dc/volkswagen_we_connect_id/releases/tag/v${version}";
-    description = "Statistics from the Volkswagen ID API";
-    homepage = "https://github.com/mitch-dc/volkswagen_we_connect_id";
-    license = lib.licenses.asl20;
-    maintainers = with lib.maintainers; [ dotlambda ];
-  };
-}