shell: move kakoune

modules/user/kakoune/default.nix

@@ -0,0 +1,67 @@
+{
+  fetchFromGitHub,
+  makeWrapper,
+  stdenv,
+  symlinkJoin,
+  kakounePlugins,
+  ...
+}: let
+  custom-kakoune = stdenv.mkDerivation {
+    name = "custom-kakoune";
+    src = fetchFromGitHub {
+      owner = "mawww";
+      repo = "kakoune";
+      rev = "be82047dbf5f74f123e925b96e0e13962a4e0c09";
+      hash = "sha256-akSmIe0SUe9re8a90ssrykowCzThZnzqVow9erT+0U4=";
+    };
+
+    makeFlags = ["debug=no" "PREFIX=${placeholder "out"}"];
+
+    enableParallellBuilding = true;
+
+    doInstallCheck = false;
+    installCheckPhase = ''
+      $out/bin/kak -ui json -e "kill 0"
+    '';
+    postInstall = ''
+      cd "$out/share/kak"
+      autoload_target=$(readlink autoload)
+      rm autoload
+      mkdir autoload
+      ln -s --relative "$autoload_target" autoload
+    '';
+  };
+
+  plugins = with kakounePlugins; [
+    fzf-kak
+    kakoune-catppuccin
+  ];
+
+  kakoune-wrapped = symlinkJoin {
+    name = "kakoune-wrapped";
+    nativeBuildInputs = [makeWrapper];
+    paths = [custom-kakoune] ++ plugins;
+
+    postBuild = ''
+      # create a directory for bins that kakoune needs
+      # access to, without polluting the users path by adding
+      # that binary nested with this symlinkJoin.
+      mkdir -p $out/share/kak/bin
+
+      # location of kak binary is used to find ../share/kak/autoload,
+      # unless explicitly overriden with KAKOUNE_RUNTIME
+      rm "$out/bin/kak"
+      makeWrapper "${custom-kakoune}/bin/kak" "$out/bin/kak" \
+        --set KAKOUNE_RUNTIME "$out/share/kak" \
+        --suffix PATH : "$out/share/kak/bin"
+
+      # currently kakoune ignores doc files if they are symlinks, so workaround by
+      # copying doc files over, so they become regular files...
+      mkdir "$out/DELETE_ME"
+      mv "$out/share/kak/doc" "$out/DELETE_ME"
+      cp -r --dereference "$out/DELETE_ME/doc" "$out/share/kak"
+      rm -Rf "$out/DELETE_ME"
+    '';
+  };
+in
+  kakoune-wrapped