uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/tools/filesystems/9pfs/default.nix

@@ -0,0 +1,42 @@
+{ lib, stdenv, fetchFromGitHub, fuse }:
+
+stdenv.mkDerivation {
+  pname = "9pfs";
+  version = "unstable-2015-09-18";
+
+  src = fetchFromGitHub {
+    owner = "mischief";
+    repo = "9pfs";
+    rev = "7f4ca4cd750d650c1215b92ac3cc2a28041960e4";
+    sha256 = "007s2idsn6bspmfxv1qabj39ggkgvn6gwdbhczwn04lb4c6gh3xc";
+  };
+
+  # Upstream development has stopped and is no longer accepting patches
+  # https://github.com/mischief/9pfs/pull/3
+  patches = [ ./fix-darwin-build.patch ];
+
+  preConfigure =
+    ''
+      substituteInPlace Makefile --replace '-g bin' ""
+      installFlagsArray+=(BIN=$out/bin MAN=$out/share/man/man1)
+      mkdir -p $out/bin $out/share/man/man1
+    '';
+
+  buildInputs = [ fuse ];
+
+  # Workaround build failure on -fno-common toolchains like upstream
+  # gcc-10. Otherwise build fails as:
+  #   ld: lib/auth_rpc.o:/build/source/lib/../9pfs.h:35: multiple definition of
+  #     `logfile'; 9pfs.o:/build/source/9pfs.h:35: first defined here
+  NIX_CFLAGS_COMPILE = "-fcommon";
+
+  enableParallelBuilding = true;
+
+  meta = {
+    homepage = "https://github.com/mischief/9pfs";
+    description = "FUSE-based client of the 9P network filesystem protocol";
+    maintainers = [ lib.maintainers.eelco ];
+    platforms = lib.platforms.unix;
+    license = with lib.licenses; [ lpl-102 bsd2 ];
+  };
+}

pkgs/tools/filesystems/9pfs/fix-darwin-build.patch

@@ -0,0 +1,47 @@
+From 6b7863b51c97f8ecd9a93fc4347f8938f9b5c05f Mon Sep 17 00:00:00 2001
+From: midchildan <git@midchildan.org>
+Date: Tue, 30 Mar 2021 22:21:51 +0900
+Subject: [PATCH] build: fix build for macOS
+
+---
+ 9pfs.c | 4 ++--
+ libc.h | 4 ++++
+ 2 files changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/9pfs.c b/9pfs.c
+index 2c481bd..f5c487c 100644
+--- a/9pfs.c
++++ b/9pfs.c
+@@ -30,7 +30,7 @@
+ enum
+ {
+ 	CACHECTLSIZE = 8, /* sizeof("cleared\n") - 1 */
+-	MSIZE = 8192
++	MSIZE_9P = 8192
+ };
+ 
+ void	dir2stat(struct stat*, Dir*);
+@@ -505,7 +505,7 @@ main(int argc, char *argv[])
+ 		freeaddrinfo(ainfo);
+ 
+ 	init9p();
+-	msize = _9pversion(MSIZE);
++	msize = _9pversion(MSIZE_9P);
+ 	if(doauth){
+ 		authfid = _9pauth(AUTHFID, user, NULL);
+ 		ai = auth_proxy(authfid, auth_getkey, "proto=p9any role=client");
+diff --git a/libc.h b/libc.h
+index 099adba..aac03c5 100644
+--- a/libc.h
++++ b/libc.h
+@@ -61,6 +61,10 @@ typedef unsigned char uchar;
+ typedef unsigned long long uvlong;
+ typedef long long vlong;
+ 
++#ifndef __GLIBC__
++typedef unsigned long ulong;
++#endif
++
+ typedef
+ struct Qid
+ {