header-file-mode: init at version unstable-2022-04-19

Add Emacs library `header-file' from GitHub.

maintainers/maintainer-list.nix

@@ -380,6 +380,12 @@
     githubId = 209175;
     name = "Alesya Huzik";
   };
+  aidalgol = {
+    email = "aidalgol+nixpkgs@fastmail.net";
+    github = "aidalgol";
+    githubId = 2313201;
+    name = "Aidan Gauland";
+  };
   aij = {
     email = "aij+git@mrph.org";
     github = "aij";

pkgs/applications/editors/emacs/elisp-packages/header-file-mode/default.nix

@@ -0,0 +1,30 @@
+{ trivialBuild
+, lib
+, fetchFromGitHub
+}:
+
+trivialBuild {
+  pname = "header-file-mode";
+  version = "unstable-2022-04-19";
+
+  src = fetchFromGitHub {
+    owner = "0x4b";
+    repo = "header-file-mode";
+    rev = "fdf1930730e1b0c3f82490099a1325805491eff5";
+    sha256 = "sha256-FJgRI6RLQk9osh7d+YRfrV5CoGCDx2cZvsjAWlm969c=";
+  };
+
+  postUnpack = ''
+    sourceRoot="$sourceRoot/lisp"
+  '';
+
+  meta = {
+    description = ''
+      A major mode that, when associated with the .h file extension, will put
+      those file into the major mode of their corresponding implementation file.
+    '';
+    license = lib.licenses.gpl3Plus;
+    platforms = lib.platforms.all;
+    maintainers = with maintainers; [ aidalgol ];
+  };
+}

pkgs/applications/editors/emacs/elisp-packages/manual-packages.nix

@@ -178,6 +178,8 @@
 
   git-undo = callPackage ./git-undo { };
 
+  header-file-mode = callPackage ./header-file-mode { };
+
   helm-words = callPackage ./helm-words { };
 
   isearch-plus = callPackage ./isearch-plus { };