From 18125e6f50c77d56ba3f7486590db2bfb55a367b Mon Sep 17 00:00:00 2001
From: David McFarland <corngood@gmail.com>
Date: Tue, 23 May 2017 10:36:12 -0300
Subject: [PATCH] help2man: help wrapper find libintl on cygwin

---
 .../tools/misc/help2man/1.40.4-cygwin-nls.patch        | 10 +++++-----
 pkgs/development/tools/misc/help2man/default.nix       |  7 ++++---
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/pkgs/development/tools/misc/help2man/1.40.4-cygwin-nls.patch b/pkgs/development/tools/misc/help2man/1.40.4-cygwin-nls.patch
index 20b99998154d..82f8cf1cb37b 100644
--- a/pkgs/development/tools/misc/help2man/1.40.4-cygwin-nls.patch
+++ b/pkgs/development/tools/misc/help2man/1.40.4-cygwin-nls.patch
@@ -16,8 +16,8 @@ that we're trying to help2man).
 
  install_preload: install_dirs preload
 -	$(INSTALL_PROGRAM) $(preload).so $(DESTDIR)$(pkglibdir)
-+	$(INSTALL_PROGRAM) lib/cygintl-8.dll $(DESTDIR)$(pkglibdir)
-+	ln -sf cygintl-8.dll $(DESTDIR)$(pkglibdir)/$(preload).so
++	$(INSTALL_PROGRAM) lib/cygintl-9.dll $(DESTDIR)$(pkglibdir)
++	ln -sf cygintl-9.dll $(DESTDIR)$(pkglibdir)/$(preload).so
 
  install_l10n: install_dirs msg_l10n man_l10n info_l10n
         set -e; \
@@ -27,8 +27,8 @@ that we're trying to help2man).
  $(preload).so: $(srcdir)/$(preload).c
 -	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $@ -fPIC -shared $? $(LIBS)
 +	mkdir -p lib
-+	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o lib/cygintl-8.dll -shared $? $(LIBS)
-+	ln -sf lib/cygintl-8.dll $@
++	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o lib/cygintl-9.dll -shared $? $(LIBS)
++	ln -sf lib/cygintl-9.dll $@
 
  man: $(target).1
  $(target).1: $(srcdir)/$(target).PL $(srcdir)/$(target).h2m.PL
@@ -62,7 +62,7 @@ that we're trying to help2man).
          return;
  
 +#ifdef __CYGWIN__
-+    if (!(RTLD_NEXT = dlopen("/usr/bin/cygintl-8.dll", RTLD_LAZY)))
++    if (!(RTLD_NEXT = dlopen("/usr/bin/cygintl-9.dll", RTLD_LAZY)))
 +        die("libintl8 not found");
 +#endif
 +
diff --git a/pkgs/development/tools/misc/help2man/default.nix b/pkgs/development/tools/misc/help2man/default.nix
index 8bf3db59147b..5e2edce56f0d 100644
--- a/pkgs/development/tools/misc/help2man/default.nix
+++ b/pkgs/development/tools/misc/help2man/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, perl, gettext, LocaleGettext, makeWrapper }:
+{ stdenv, hostPlatform, fetchurl, perl, gettext, LocaleGettext, makeWrapper }:
 
 stdenv.mkDerivation rec {
   name = "help2man-1.47.4";
@@ -12,11 +12,12 @@ stdenv.mkDerivation rec {
 
   doCheck = false;                                # target `check' is missing
 
-  patches = if stdenv.isCygwin then [ ./1.40.4-cygwin-nls.patch ] else null;
+  patches = if hostPlatform.isCygwin then [ ./1.40.4-cygwin-nls.patch ] else null;
 
   postInstall =
     '' wrapProgram "$out/bin/help2man" \
-         --prefix PERL5LIB : "$(echo ${LocaleGettext}/lib/perl*/site_perl)"
+         --prefix PERL5LIB : "$(echo ${LocaleGettext}/lib/perl*/site_perl)" \
+         ${stdenv.lib.optionalString hostPlatform.isCygwin "--prefix PATH : ${gettext}/bin"}
     '';