python3Packages.flitBuildHook: remove

pkgs/development/interpreters/python/hooks/default.nix

@@ -45,15 +45,6 @@ in {
       propagatedBuildInputs = [ ];
     } ./egg-unpack-hook.sh) {};
 
-  flitBuildHook = callPackage ({ makePythonHook, flit }:
-    makePythonHook {
-      name = "flit-build-hook";
-      propagatedBuildInputs = [ flit ];
-      substitutions = {
-        inherit pythonInterpreter;
-      };
-    } ./flit-build-hook.sh) {};
-
   pipBuildHook = callPackage ({ makePythonHook, pip, wheel }:
     makePythonHook {
       name = "pip-build-hook.sh";

pkgs/development/interpreters/python/hooks/flit-build-hook.sh

@@ -1,15 +0,0 @@
-# Setup hook for flit
-echo "Sourcing flit-build-hook"
-
-flitBuildPhase () {
-    echo "Executing flitBuildPhase"
-    runHook preBuild
-    @pythonInterpreter@ -m flit build --format wheel
-    runHook postBuild
-    echo "Finished executing flitBuildPhase"
-}
-
-if [ -z "${dontUseFlitBuild-}" ] && [ -z "${buildPhase-}" ]; then
-    echo "Using flitBuildPhase"
-    buildPhase=flitBuildPhase
-fi

pkgs/development/interpreters/python/mk-python-derivation.nix

@@ -11,7 +11,6 @@
 , namePrefix
 , update-python-libraries
 , setuptools
-, flitBuildHook
 , pypaBuildHook
 , pypaInstallHook
 , pythonCatchConflictsHook
@@ -90,7 +89,6 @@
 # Several package formats are supported.
 # "setuptools" : Install a common setuptools/distutils based package. This builds a wheel.
 # "wheel" : Install from a pre-compiled wheel.
-# "flit" : Install a flit package. This builds a wheel.
 # "pyproject": Install a package using a ``pyproject.toml`` file (PEP517). This builds a wheel.
 # "egg": Install a package from an egg.
 # "other" : Provide your own buildPhase and installPhase.
@@ -122,7 +120,7 @@ let
     else
       "setuptools";
 
-  withDistOutput = lib.elem format' ["pyproject" "setuptools" "flit" "wheel"];
+  withDistOutput = lib.elem format' ["pyproject" "setuptools" "wheel"];
 
   name_ = name;
 
@@ -222,8 +220,6 @@ let
       unzip
     ] ++ lib.optionals (format' == "setuptools") [
       setuptoolsBuildHook
-    ] ++ lib.optionals (format' == "flit") [
-      flitBuildHook
     ] ++ lib.optionals (format' == "pyproject") [(
       if isBootstrapPackage then
         pypaBuildHook.override {

pkgs/development/interpreters/python/python2/mk-python-derivation.nix

@@ -98,12 +98,10 @@
 
 , ... } @ attrs:
 
-assert lib.assertMsg (format != "flit") "flit is not a supported Python 2 format";
-
 let
   inherit (python) stdenv;
 
-  withDistOutput = lib.elem format ["pyproject" "setuptools" "flit" "wheel"];
+  withDistOutput = lib.elem format ["pyproject" "setuptools" "wheel"];
 
   name_ = name;
 
@@ -171,7 +169,7 @@ let
     nativeBuildInputs = [
       python
       wrapPython
-      ensureNewerSourcesForZipFilesHook  # move to wheel installer (pip) or builder (setuptools, flit, ...)?
+      ensureNewerSourcesForZipFilesHook  # move to wheel installer (pip) or builder (setuptools, ...)?
       pythonRemoveTestsDirHook
     ] ++ lib.optionals catchConflicts [
       pythonCatchConflictsHook