From e36e2f6679f422bb280e3d6b132a44e5aa21c613 Mon Sep 17 00:00:00 2001
From: Johannes Schickling <schickling.j@gmail.com>
Date: Tue, 20 Jan 2026 23:05:44 +0100
Subject: [PATCH] feat(nix): add shell completion outputs to flake (#1210)

Add fish, bash, and zsh completion packages to the Nix flake.
Completions are generated at build time using `bd completion <shell>`.

Usage:
  nix build .#fish-completions
  nix build .#bash-completions
  nix build .#zsh-completions

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
---
 flake.nix | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/flake.nix b/flake.nix
index f923ca70..33d23bf9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -23,9 +23,27 @@
         system:
         let
           pkgs = nixpkgs.legacyPackages.${system};
+          bd = pkgs.callPackage ./default.nix { inherit pkgs self; };
         in
         {
-          packages.default = pkgs.callPackage ./default.nix { inherit pkgs self; };
+          packages = {
+            default = bd;
+
+            fish-completions = pkgs.runCommand "bd-fish-completions" { } ''
+              mkdir -p $out/share/fish/vendor_completions.d
+              ${bd}/bin/bd completion fish > $out/share/fish/vendor_completions.d/bd.fish
+            '';
+
+            bash-completions = pkgs.runCommand "bd-bash-completions" { } ''
+              mkdir -p $out/share/bash-completion/completions
+              ${bd}/bin/bd completion bash > $out/share/bash-completion/completions/bd
+            '';
+
+            zsh-completions = pkgs.runCommand "bd-zsh-completions" { } ''
+              mkdir -p $out/share/zsh/site-functions
+              ${bd}/bin/bd completion zsh > $out/share/zsh/site-functions/_bd
+            '';
+          };
 
           apps.default = {
             type = "app";