Merge pull request #6 from vst/4-shell-completions-for-nix-based-inst…

…allations Install Shell Completions
vst · Mar 19, 2024 · ebeeeb3 · ebeeeb3
2 parents 826c30c + 2d6afc9
commit ebeeeb3
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diff --git a/default.nix b/default.nix
@@ -124,7 +124,9 @@ let
   ## Get the installable application (only static executable):
   thisApp = mkHaskellApp {
     drv = thisHaskell.${thisHaskellPackages.main.name};
-    binPaths = [ ];
+    binPaths = [
+      pkgs.bashInteractive ## Added for bash-based CLI option completions
+    ];
   };
 
   ############

diff --git a/nix/lib/mk-haskell-app.nix b/nix/lib/mk-haskell-app.nix
@@ -10,6 +10,7 @@ let
   ## We need these inputs at buildtime:
   extraNativeBuildInputs = [
     pkgs.git
+    pkgs.installShellFiles
     pkgs.makeWrapper
     pkgs.ronn
   ] ++ nativeBuildInputs;
@@ -21,6 +22,11 @@ let
   extraPostFixup = ''
     ## Wrap program:
     wrapProgram $out/bin/${name} --prefix PATH : ${binPath}
+
+    ## Install completion scripts:
+    installShellCompletion --bash --name ${name}.bash <($out/bin/${name} --bash-completion-script "$out/bin/${name}")
+    installShellCompletion --fish --name ${name}.fish <($out/bin/${name} --fish-completion-script "$out/bin/${name}")
+    installShellCompletion --zsh  --name _${name}     <($out/bin/${name} --zsh-completion-script  "$out/bin/${name}")
   '';
 in
 pkgs.haskell.lib.justStaticExecutables (