hwatch: cleanup

pkgs/by-name/hw/hwatch/package.nix

@@ -2,6 +2,7 @@
   lib,
   fetchFromGitHub,
   rustPlatform,
+  stdenv,
   testers,
   hwatch,
   installShellFiles,
@@ -15,18 +16,17 @@ rustPlatform.buildRustPackage (finalAttrs: {
     owner = "blacknon";
     repo = "hwatch";
     tag = finalAttrs.version;
-    sha256 = "sha256-lMsBzMDMgpHxcQFtfZ4K7r2WRUaVR8Ry/kPvwfzPObI=";
+    hash = "sha256-lMsBzMDMgpHxcQFtfZ4K7r2WRUaVR8Ry/kPvwfzPObI=";
   };
 
   cargoHash = "sha256-UnaZZEmX5XoTVFLEFj5JkJXJkjoUBwzJokfffJTPP4M=";
 
   nativeBuildInputs = [ installShellFiles ];
 
-  postInstall = ''
-    installShellCompletion --cmd hwatch \
-      --bash $src/completion/bash/hwatch-completion.bash \
-      --fish $src/completion/fish/hwatch.fish \
-      --zsh $src/completion/zsh/_hwatch
+  postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
+    for shell in bash fish zsh; do
+      installShellCompletion --cmd hwatch --"$shell" <("$out/bin/hwatch" --completion "$shell")
+    done
   '';
 
   passthru.tests.version = testers.testVersion {
@@ -34,12 +34,13 @@ rustPlatform.buildRustPackage (finalAttrs: {
   };
 
   meta = {
-    homepage = "https://github.com/blacknon/hwatch";
     description = "Modern alternative to the watch command";
     longDescription = ''
       A modern alternative to the watch command, records the differences in
       execution results and can check this differences at after.
     '';
+    homepage = "https://github.com/blacknon/hwatch";
+    changelog = "https://github.com/blacknon/hwatch/releases/tag/${finalAttrs.src.tag}";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ iamanaws ];
     mainProgram = "hwatch";