From 3b445042ac00fb28aa0a74568a2c30f65afde807 Mon Sep 17 00:00:00 2001
From: Christian Kauhaus <kc@flyingcircus.io>
Date: Thu, 6 Dec 2018 17:22:31 +0100
Subject: [PATCH] rPackages.littler: fix build (#51282)

littler gives a wrapped called `r` (or `lr` for non-case-preserving
systems like Darwin) which works as shebang or pipe target.

The build was completely broken before (missing deps).

Symlink executables and manpage into standard locations so that this
packages also works in `environment.systemPackages`.
---
 pkgs/development/r-modules/default.nix | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index 428d6c60546..27b38138f6d 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -950,6 +950,18 @@ let
       preConfigure = "patchShebangs configure";
     });
 
+    littler = old.littler.overrideAttrs (attrs: with pkgs; {
+      buildInputs = [ pcre lzma zlib bzip2 icu which ] ++ attrs.buildInputs;
+      postInstall = ''
+        install -d $out/bin $out/share/man/man1
+        ln -s ../library/littler/bin/r $out/bin/r
+        ln -s ../library/littler/bin/r $out/bin/lr
+        ln -s ../../../library/littler/man-page/r.1 $out/share/man/man1
+        # these won't run without special provisions, so better remove them
+        rm -r $out/library/littler/script-tests
+      '';
+    });
+
   };
 in
   self