From 2f5def936ad2f7ac4a7aa4cf95dc0a13213c3a9f Mon Sep 17 00:00:00 2001
From: aszlig <aszlig@redmoonstudios.org>
Date: Mon, 7 Dec 2015 21:59:06 +0100
Subject: [PATCH] Add test.nix file to make testing easier with Nix.

This allows to just run "nix-build test.nix" and we get a Vim version
with isolated dependencies and just Vader and nothing more.

I've used this mainly because on my setup I'm patching in Vim plugins
into the default vimrc itself rather than having a dotfile or a
system-wide file.

So this should avoid any clashes with existing plugins or the stock Vim
initialization file.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
---
 test.nix | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 test.nix

diff --git a/test.nix b/test.nix
new file mode 100644
index 00000000000..a0a8cd32c19
--- /dev/null
+++ b/test.nix
@@ -0,0 +1,28 @@
+with import <nixpkgs> {};
+
+let
+  vader = fetchFromGitHub {
+    owner = "junegunn";
+    repo = "vader.vim";
+    rev = "ad2c752435baba9e7544d0046f0277c3573439bd";
+    sha256 = "0yvnah4lxk5w5qidc3y5nvl6lpi8rcv26907b3w7vjskqc935b8f";
+  };
+
+  src = ./.;
+
+  rcFile = writeText "vimrc" ''
+    filetype off
+    set rtp+=${vader}
+    set rtp+=${src}
+    filetype plugin indent on
+    syntax enable
+  '';
+
+  run = ''
+    ${vim}/bin/vim -XNu '${rcFile}' -i NONE \
+      -c 'Vader! ${src}/test/*.vader' > /dev/null
+  '';
+
+in runCommand "vim-nix-test.log" {} ''
+  (${run}) 2>&1 | tee "$out" >&2
+''