Merge pull request #28779 from vyp/deer

deer: init at 1.4

pkgs/shells/zsh-deer/default.nix

···
+{ stdenv, fetchFromGitHub, perl }:
+
+let
+  version = "1.4";
+  name = "deer-${version}";
+in stdenv.mkDerivation {
+  inherit name;
+
+  src = fetchFromGitHub {
+    owner = "Vifon";
+    repo = "deer";
+    rev = "v${version}";
+    sha256 = "1xnbnbi0zk2xsyn8dqsmyxqlfnl36pb1wwibnlp0dxixw6sfymyl";
+  };
+
+  prePatch = ''
+    substituteInPlace deer \
+      --replace " perl " " ${perl}/bin/perl "
+  '';
+
+  patches = [ ./realpath.patch ];
+
+  installPhase = ''
+    mkdir -p $out/share/zsh/site-functions/
+    cp deer $out/share/zsh/site-functions/
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Ranger-like file navigation for zsh";
+    homepage = "https://github.com/Vifon/deer";
+    license = licenses.gpl3Plus;
+    maintainers = maintainers.vyp;
+    platforms = platforms.unix;
+  };
+}

pkgs/shells/zsh-deer/realpath.patch

···
+From ceadb2f11119143af4f590ea6b05a531483219b5 Mon Sep 17 00:00:00 2001
+From: xd1le <[e-mail]>
+Date: Wed, 30 Aug 2017 17:27:20 +1000
+Subject: [PATCH] use realpath instead of python to calculate relative path
+
+---
+ deer | 5 +----
+ 1 file changed, 1 insertion(+), 4 deletions(-)
+
+diff --git a/deer b/deer
+index 3d89dea..804a871 100644
+--- a/deer
++++ b/deer
+@@ -259,10 +259,7 @@ deer-get-relative()
+ {
+     local TMP
+     TMP=${1:-${DEER_DIRNAME%/}/$DEER_BASENAME[$DEER_DIRNAME]}
+-    TMP="`python -c '
+-import sys, os
+-print(os.path.relpath(sys.argv[1], sys.argv[2]))
+-' $TMP ${DEER_STARTDIR:-$PWD}`"
++    TMP="`realpath --relative-to=${DEER_STARTDIR:-$PWD} $TMP`"
+     print -R $TMP:q
+ }
+ 
+-- 
+2.14.1
+

pkgs/top-level/all-packages.nix

···
 
   debootstrap = callPackage ../tools/misc/debootstrap { };
 
+  deer = callPackage ../shells/zsh-deer { };
+
   detox = callPackage ../tools/misc/detox { };
 
   devilspie2 = callPackage ../applications/misc/devilspie2 {