From 14e9972e497a07f83e97d91bb18d126d63e68ee5 Mon Sep 17 00:00:00 2001
From: Ram Kromberg <ramkromberg@mail.com>
Date: Mon, 12 Sep 2016 18:26:28 +0300
Subject: [PATCH] groff: add missing depedencies for optional postscript and
 html outputs

---
 pkgs/tools/text/groff/default.nix | 27 ++++++++++++++++++++++++---
 pkgs/top-level/all-packages.nix   |  2 ++
 2 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/pkgs/tools/text/groff/default.nix b/pkgs/tools/text/groff/default.nix
index 728e9de8b488..df6a1119800e 100644
--- a/pkgs/tools/text/groff/default.nix
+++ b/pkgs/tools/text/groff/default.nix
@@ -1,4 +1,7 @@
-{ stdenv, fetchurl, ghostscript, perl, groff }:
+{ stdenv, fetchurl, perl, groff
+, ghostscript #for postscript and html output
+, psutils, netpbm #for html output
+}:
 
 stdenv.mkDerivation rec {
   name = "groff-1.22.3";
@@ -12,7 +15,21 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = false;
 
-  buildInputs = [ ghostscript ];
+  postPatch = stdenv.lib.optionalString (psutils != null) ''
+    substituteInPlace src/preproc/html/pre-html.cpp \
+      --replace "psselect" "${psutils}/bin/psselect"
+  '' + stdenv.lib.optionalString (netpbm != null) ''
+    substituteInPlace src/preproc/html/pre-html.cpp \
+      --replace "pnmcut" "${netpbm}/bin/pnmcut" \
+      --replace "pnmcrop" "${netpbm}/bin/pnmcrop" \
+      --replace "pnmtopng" "${netpbm}/bin/pnmtopng"
+    substituteInPlace tmac/www.tmac \
+      --replace "pnmcrop" "${netpbm}/bin/pnmcrop" \
+      --replace "pngtopnm" "${netpbm}/bin/pngtopnm" \
+      --replace "@PNMTOPS_NOSETPAGE@" "${netpbm}/bin/pnmtops -nosetpage"
+  '';
+
+  buildInputs = [ ghostscript psutils netpbm ];
   nativeBuildInputs = [ perl ];
 
   # Builds running without a chroot environment may detect the presence
@@ -20,7 +37,11 @@ stdenv.mkDerivation rec {
   # package. To avoid this issue, X11 support is explicitly disabled.
   # Note: If we ever want to *enable* X11 support, then we'll probably
   # have to pass "--with-appresdir", too.
-  configureFlags = "--without-x";
+  configureFlags = [
+    "--without-x"
+  ] ++ stdenv.lib.optionals (ghostscript != null) [
+    "--with-gs=${ghostscript}/bin/gs"
+  ];
 
   doCheck = true;
 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 172eedaed564..a725c8c912b2 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1907,6 +1907,8 @@ in
 
   groff = callPackage ../tools/text/groff {
     ghostscript = null;
+    psutils = null;
+    netpbm = null;
   };
 
   groonga = callPackage ../servers/search/groonga { };