From c6c76abb2a0e9ceeb6d9a5a610ed7d1d62b3612a Mon Sep 17 00:00:00 2001
From: Michal Sojka <michal.sojka@cvut.cz>
Date: Sat, 5 Oct 2024 18:14:45 +0200
Subject: [PATCH] git-cliff: Add man page and shell completion

---
 .../version-management/git-cliff/default.nix   | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/pkgs/applications/version-management/git-cliff/default.nix b/pkgs/applications/version-management/git-cliff/default.nix
index 25bcf4f1ca7c..5725526e8f3d 100644
--- a/pkgs/applications/version-management/git-cliff/default.nix
+++ b/pkgs/applications/version-management/git-cliff/default.nix
@@ -4,6 +4,7 @@
 , rustPlatform
 , Security
 , SystemConfiguration
+, installShellFiles
 }:
 
 rustPlatform.buildRustPackage rec {
@@ -26,6 +27,23 @@ rustPlatform.buildRustPackage rec {
     Security SystemConfiguration
   ];
 
+  nativeBuildInputs = [ installShellFiles ];
+
+  postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
+    export OUT_DIR=$(mktemp -d)
+
+    # Generate shell completions
+    $out/bin/git-cliff-completions
+    installShellCompletion \
+      --bash $OUT_DIR/git-cliff.bash \
+      --fish $OUT_DIR/git-cliff.fish \
+      --zsh $OUT_DIR/_git-cliff
+
+    # Generate man page
+    $out/bin/git-cliff-mangen
+    installManPage $OUT_DIR/git-cliff.1
+  '';
+
   meta = with lib; {
     description = "Highly customizable Changelog Generator that follows Conventional Commit specifications";
     homepage = "https://github.com/orhun/git-cliff";