1 files changed, 7 insertions, 2 deletions
diff --git a/Biz/Bild/Rules.nix b/Biz/Bild/Rules.nix
index a8695eb..f5f016f 100644
--- a/Biz/Bild/Rules.nix
+++ b/Biz/Bild/Rules.nix
@@ -3,6 +3,9 @@
 with nixpkgs;
 
 let
+  ghcCompiler = "ghc865";
+  ghcjsCompiler = "ghcjs86";
+
   # provided by .envrc
   root = builtins.getEnv "BIZ_ROOT";
 
@@ -50,8 +53,8 @@ let
       ${toString (lib.lists.subtractLists haskellDeps deps)}
     ''));
 
-  ghc_ = mkGhc pkgs.haskell.packages.ghc865.ghcWithHoogle;
-  ghcjs_ = mkGhc pkgs.haskell.packages.ghcjs86.ghcWithPackages;
+  ghc_ = mkGhc pkgs.haskell.packages.${ghcCompiler}.ghcWithHoogle;
+  ghcjs_ = mkGhc pkgs.haskell.packages.${ghcjsCompiler}.ghcWithPackages;
 in {
   ghc = main:
     let
@@ -131,6 +134,7 @@ in {
 
       # tools
       nixpkgs.cmark
+      nixpkgs.haskell.packages.${ghcCompiler}.fast-tags
       nixpkgs.figlet
       nixpkgs.hlint
       nixpkgs.lolcat
@@ -140,6 +144,7 @@ in {
       nixpkgs.python37Packages.black
       nixpkgs.python37Packages.pylint
       nixpkgs.wemux
+      (pkgs.writeScriptBin "ftags" (builtins.readFile ../Ide/ftags.sh))
     ];
     shellHook = ". ${./ShellHook.sh}";
   };