From 5b787eba2560086070d96e4ce82ea10ce66add2e Mon Sep 17 00:00:00 2001
From: Will Dietz <w@wdtz.org>
Date: Sat, 9 Jun 2018 02:47:28 -0500
Subject: [PATCH 1/2] tcsh: patch to fix w/musl

---
 pkgs/shells/tcsh/default.nix | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/pkgs/shells/tcsh/default.nix b/pkgs/shells/tcsh/default.nix
index da76e2c3027..1dc96655956 100644
--- a/pkgs/shells/tcsh/default.nix
+++ b/pkgs/shells/tcsh/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl
+{ stdenv, fetchurl, fetchpatch
 , ncurses }:
 
 stdenv.mkDerivation rec {
@@ -16,6 +16,13 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ ncurses ];
 
+  patches = stdenv.lib.optional stdenv.hostPlatform.isMusl
+    (fetchpatch {
+      name = "sysmalloc.patch";
+      url = "https://git.alpinelinux.org/cgit/aports/plain/community/tcsh/001-sysmalloc.patch?id=184585c046cdd56512f1a76e426dd799b368f8cf";
+      sha256 = "1qc6ydxhdfizsbkaxhpn3wib8sfphrw10xnnsxx2prvzg9g2zp67";
+    });
+
   meta = with stdenv.lib;{
     description = "An enhanced version of the Berkeley UNIX C shell (csh)";
     longDescription = ''

From b19a03ec622038fd870f5163652cbf03a8ef7b36 Mon Sep 17 00:00:00 2001
From: Will Dietz <w@wdtz.org>
Date: Sat, 9 Jun 2018 03:14:29 -0500
Subject: [PATCH 2/2] tcsh: build for darwin too!

---
 pkgs/shells/tcsh/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/shells/tcsh/default.nix b/pkgs/shells/tcsh/default.nix
index 1dc96655956..0f393c11988 100644
--- a/pkgs/shells/tcsh/default.nix
+++ b/pkgs/shells/tcsh/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     homepage = http://www.tcsh.org/;
     license = licenses.bsd2;
     maintainers = with maintainers; [ AndersonTorres ];
-    platforms = platforms.linux;
+    platforms = platforms.linux ++ platforms.darwin;
   };
 
   passthru = {