diff --git a/pkgs/applications/video/mpv/0001-fix-darwin-build.patch b/pkgs/applications/video/mpv/0001-fix-darwin-build.patch
new file mode 100644
index 000000000000..2b6085ed3c9f
--- /dev/null
+++ b/pkgs/applications/video/mpv/0001-fix-darwin-build.patch
@@ -0,0 +1,19 @@
+diff --git a/osdep/mac/input_helper.swift b/osdep/mac/input_helper.swift
+index 0acec6bd40..0ec5837864 100644
+--- a/osdep/mac/input_helper.swift
++++ b/osdep/mac/input_helper.swift
+@@ -18,6 +18,14 @@
+ import Cocoa
+ import Carbon.HIToolbox
+ 
++extension NSCondition {
++    fileprivate func withLock<T>(_ body: () throws -> T) rethrows -> T {
++        self.lock()
++        defer { self.unlock() }
++        return try body()
++    }
++}
++
+ class InputHelper: NSObject {
+     var option: OptionHelper?
+     var lock = NSCondition()
diff --git a/pkgs/applications/video/mpv/default.nix b/pkgs/applications/video/mpv/default.nix
index 20601537d373..d1f44b09b16d 100644
--- a/pkgs/applications/video/mpv/default.nix
+++ b/pkgs/applications/video/mpv/default.nix
@@ -151,6 +151,11 @@ stdenv'.mkDerivation (finalAttrs: {
     hash = "sha256-BOGh+QBTO7hrHohh+RqjSF8eHQH8jVBPjG/k4eyFaaM=";
   };
 
+  patches = [
+    # Fix build with Darwin SDK 11
+    ./0001-fix-darwin-build.patch
+  ];
+
   postPatch = lib.concatStringsSep "\n" [
     # Don't reference compile time dependencies or create a build outputs cycle
     # between out and dev
@@ -308,6 +313,8 @@ stdenv'.mkDerivation (finalAttrs: {
       pushd ../TOOLS
       cp mpv_identify.sh umpv $out/bin/
       popd
+    ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       pushd $out/share/applications
 
       sed -e '/Icon=/ ! s|mpv|umpv|g; s|^Exec=.*|Exec=umpv %U|' \
diff --git a/pkgs/servers/gonic/default.nix b/pkgs/servers/gonic/default.nix
index d23e130375de..c09c58f0b269 100644
--- a/pkgs/servers/gonic/default.nix
+++ b/pkgs/servers/gonic/default.nix
@@ -30,18 +30,18 @@ buildGoModule rec {
   postPatch = lib.optionalString transcodingSupport ''
     substituteInPlace \
       transcode/transcode.go \
-      --replace \
+      --replace-fail \
         '`ffmpeg' \
         '`${lib.getBin ffmpeg}/bin/ffmpeg'
   '' + ''
     substituteInPlace \
       jukebox/jukebox.go \
-      --replace \
+      --replace-fail \
         '"mpv"' \
         '"${lib.getBin mpv}/bin/mpv"'
   '' + ''
     substituteInPlace server/ctrlsubsonic/testdata/test* \
-      --replace \
+      --replace-quiet \
         '"audio/flac"' \
         '"audio/x-flac"'
   '';
@@ -50,6 +50,9 @@ buildGoModule rec {
     tests.gonic = nixosTests.gonic;
   };
 
+  # tests require it
+  __darwinAllowLocalNetworking = true;
+
   meta = {
     homepage = "https://github.com/sentriz/gonic";
     description = "Music streaming server / subsonic server API implementation";