From e7dd80a443df2607d08447907cebdd4f01382864 Mon Sep 17 00:00:00 2001
From: figsoda <figsoda@pm.me>
Date: Fri, 22 Sep 2023 10:44:00 -0400
Subject: [PATCH] pijul: install shell completions

---
 pkgs/applications/version-management/pijul/default.nix | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/pkgs/applications/version-management/pijul/default.nix b/pkgs/applications/version-management/pijul/default.nix
index 4d3cea9c00c9..1ea92e333d5b 100644
--- a/pkgs/applications/version-management/pijul/default.nix
+++ b/pkgs/applications/version-management/pijul/default.nix
@@ -1,6 +1,7 @@
 { lib, stdenv
 , fetchCrate
 , rustPlatform
+, installShellFiles
 , pkg-config
 , libsodium
 , openssl
@@ -22,7 +23,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-mRi0NUETTdYE/oM+Jo7gW/zNby8dPAKl6XhzP0Qzsf0=";
 
   doCheck = false;
-  nativeBuildInputs = [ pkg-config ];
+  nativeBuildInputs = [ installShellFiles pkg-config ];
   buildInputs = [ openssl libsodium xxHash ]
     ++ (lib.optionals gitImportSupport [ libgit2 ])
     ++ (lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
@@ -31,6 +32,13 @@ rustPlatform.buildRustPackage rec {
 
   buildFeatures = lib.optional gitImportSupport "git";
 
+  postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
+    installShellCompletion --cmd pijul \
+      --bash <($out/bin/pijul completion bash) \
+      --fish <($out/bin/pijul completion fish) \
+      --zsh <($out/bin/pijul completion zsh)
+  '';
+
   meta = with lib; {
     description = "A distributed version control system";
     homepage = "https://pijul.org";