lfe: 1.2.1 -> 1.3

Add patches to the builder expression, and add those necessary for 1.3.

pkgs/development/interpreters/lfe/generic-builder.nix

@@ -6,10 +6,13 @@
 , sha256 ? null
 , rev ? version
 , src ? fetchFromGitHub { inherit rev sha256; owner = "rvirding"; repo = "lfe"; }
+, patches ? []
 }:
 
 let
-  inherit (stdenv.lib) assertMsg getVersion versionAtLeast versions;
+  inherit (stdenv.lib)
+    assertMsg makeBinPath optionalString
+    getVersion versionAtLeast versionOlder versions;
 
   mainVersion = versions.major (getVersion erlang);
 
@@ -36,13 +39,15 @@ buildRebar3 {
 
   buildInputs = [ erlang makeWrapper ];
   beamDeps    = [ proper ];
-  patches     = [ ./no-test-deps.patch ];
+  patches     = [ ./no-test-deps.patch ./dedup-ebins.patch ] ++ patches;
   doCheck     = true;
   checkTarget = "travis";
 
+  makeFlags = [ "-e" "MANDB=''" "PREFIX=$$out"];
+
   # These installPhase tricks are based on Elixir's Makefile.
   # TODO: Make, upload, and apply a patch.
-  installPhase = ''
+  installPhase = optionalString (versionOlder version "1.3") ''
     local libdir=$out/lib/lfe
     local ebindir=$libdir/ebin
     local bindir=$libdir/bin
@@ -65,7 +70,7 @@ buildRebar3 {
     # Add some stuff to PATH so the scripts can run without problems.
     for f in $out/bin/*; do
       wrapProgram $f \
-        --prefix PATH ":" "${stdenv.lib.makeBinPath [ erlang coreutils bash ]}:$out/bin"
+        --prefix PATH ":" "${makeBinPath [ erlang coreutils bash ]}:$out/bin"
       substituteInPlace $f --replace "/usr/bin/env" "${coreutils}/bin/env"
     done
   '';