From 25ffc6db68e5d5ff53df69209f6e26d02249639f Mon Sep 17 00:00:00 2001
From: Ingolf Wanger <contact@ingolf-wagner.de>
Date: Fri, 24 May 2019 14:39:40 +0200
Subject: haskell add shell.nix

---
 haskell/shell.nix | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 haskell/shell.nix

diff --git a/haskell/shell.nix b/haskell/shell.nix
new file mode 100644
index 0000000..0f56c71
--- /dev/null
+++ b/haskell/shell.nix
@@ -0,0 +1,55 @@
+{ pkgs ?  import <nixpkgs> { } }:
+
+let
+
+  all-hies = import (fetchTarball "https://github.com/infinisil/all-hies/tarball/master") {};
+
+  script = {
+    build = pkgs.writeShellScriptBin "build" /* sh */ ''
+      echo "this could be your buildscript"
+    '';
+    run = pkgs.writeShellScriptBin "run" /* sh */ ''
+      echo "this could be your run script"
+    '';
+  };
+
+in pkgs.mkShell {
+
+  buildInputs = with pkgs; [
+    script.build
+    script.run
+
+    # common tools
+    # ------------
+    cabal2nix
+    cabal-install
+
+    stylish-cabal
+    haskellPackages.stylish-haskell
+    haskellPackages.hoogle
+
+    # automatically create CI scripts
+    # https://github.com/haskell-CI/haskell-ci#quick-start-instructions
+    haskell-ci
+
+    # IDE setups
+    # ----------
+
+    # VSCode hde setup
+    # https://github.com/haskell/haskell-ide-engine#using-vs-code-with-nix
+    (pkgs.vscode.overrideDerivation (old: {
+      postFixup = ''
+        wrapProgram $out/bin/code --prefix PATH : ${lib.makeBinPath [
+          # Install stable HIE for GHC 8.6.4 (multiple ghc versions are allowed)
+          (all-hies.selection { selector = p: { inherit (p) ghc864; }; })
+        ]}
+      '';
+    }))
+
+  ];
+
+  shellHook = ''
+    HISTFILE=${toString ./.history}
+  '';
+
+}
-- 
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