diff --git a/pkgs/os-specific/darwin/apple-source-releases/patch_cmds/meson.build.in b/pkgs/os-specific/darwin/apple-source-releases/patch_cmds/meson.build.in
new file mode 100644
index 000000000000..731c60420a12
--- /dev/null
+++ b/pkgs/os-specific/darwin/apple-source-releases/patch_cmds/meson.build.in
@@ -0,0 +1,107 @@
+# Build settings based on the upstream Xcode project.
+# See: https://github.com/apple-oss-distributions/patch_cmds/blob/main/patch_cmds.xcodeproj/project.pbxproj
+
+# Project settings
+project('patch_cmds', 'c', version : '@version@')
+
+
+# Dependencies
+cc = meson.get_compiler('c')
+
+libbsd = dependency('libbsd-overlay', required : false)
+libutil = cc.find_library('util')
+
+
+# Binaries
+executable(
+    'cmp',
+    include_directories : 'cmp',
+    dependencies : [ libutil ],
+    install : true,
+    sources : [
+        'cmp/cmp.c',
+        'cmp/link.c',
+        'cmp/misc.c',
+        'cmp/regular.c',
+        'cmp/special.c',
+    ],
+)
+install_man('cmp/cmp.1')
+
+executable(
+    'diff',
+    dependencies : [ libbsd ],
+    include_directories : 'diff',
+    install : true,
+    sources : [
+        'diff/diff.c',
+        'diff/diff_atomize_text.c',
+        'diff/diff_main.c',
+        'diff/diff_myers.c',
+        'diff/diff_output.c',
+        'diff/diff_output_edscript.c',
+        'diff/diff_output_plain.c',
+        'diff/diff_output_unidiff.c',
+        'diff/diff_patience.c',
+        'diff/diffdir.c',
+        'diff/diffreg.c',
+        'diff/diffreg_new.c',
+        'diff/pr.c',
+        'diff/recallocarray.c',
+        'diff/xmalloc.c',
+    ],
+)
+install_man('diff/diff.1')
+
+executable(
+    'diff3',
+    include_directories : 'diff3',
+    install : true,
+    sources : [
+        'diff3/diff3.c',
+        'diff3/xmalloc.c',
+    ],
+)
+install_man('diff3/diff3.1')
+
+executable(
+    'diffstat',
+    include_directories : 'diffstat',
+    c_args : [
+        '-DHAVE_CONFIG_H',
+        '-D_XOPEN_SOURCE=500',
+        '-D_DARWIN_C_SOURCE',
+    ],
+    install : true,
+    sources : [ 'diffstat/diffstat.c' ],
+)
+install_man('diffstat/diffstat.1')
+
+executable(
+    'patch',
+    dependencies : [ libbsd ],
+    include_directories : 'patch',
+    install : true,
+    sources : [
+        'patch/backupfile.c',
+        'patch/inp.c',
+        'patch/mkpath.c',
+        'patch/patch.c',
+        'patch/pch.c',
+        'patch/util.c',
+        'patch/vcs.c',
+    ],
+)
+install_man('patch/patch.1')
+
+executable(
+    'sdiff',
+    dependencies : [ libbsd ],
+    include_directories : 'sdiff',
+    install : true,
+    sources : [
+        'sdiff/edit.c',
+        'sdiff/sdiff.c',
+    ],
+)
+install_man('sdiff/sdiff.1')
diff --git a/pkgs/os-specific/darwin/apple-source-releases/patch_cmds/package.nix b/pkgs/os-specific/darwin/apple-source-releases/patch_cmds/package.nix
new file mode 100644
index 000000000000..8f1f213ae5c4
--- /dev/null
+++ b/pkgs/os-specific/darwin/apple-source-releases/patch_cmds/package.nix
@@ -0,0 +1,36 @@
+{
+  lib,
+  apple-sdk,
+  libbsd,
+  libutil,
+  mkAppleDerivation,
+  pkg-config,
+}:
+
+mkAppleDerivation {
+  releaseName = "patch_cmds";
+
+  outputs = [
+    "out"
+    "man"
+  ];
+
+  xcodeHash = "sha256-FLCJY40l74ExO0WTaA8hb9guhOBXeui2GqWL/7QeJJk=";
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs =
+    [ libutil ]
+    # diff, patch, and sdiff need `strtonum`, which requires the 11.0 SDK.
+    ++ lib.optionals (lib.versionOlder (lib.getVersion apple-sdk) "11.0") [ libbsd ];
+
+  meta = {
+    description = "BSD patch commands for Darwin";
+    license = [
+      lib.licenses.apple-psl10
+      lib.licenses.bsd2 # -freebsd
+      lib.licenses.bsd3
+      lib.licenses.bsdOriginal
+    ];
+  };
+}
diff --git a/pkgs/os-specific/darwin/apple-source-releases/versions.json b/pkgs/os-specific/darwin/apple-source-releases/versions.json
index 92d0a0a8bfe8..4a8b4e339380 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/versions.json
+++ b/pkgs/os-specific/darwin/apple-source-releases/versions.json
@@ -79,6 +79,10 @@
     "hash": "sha256-8aW3dAA/dfZTayGLHqzRqnVLmwJzRpvVmXL4eJGz5OQ=",
     "version": "696"
   },
+  "patch_cmds": {
+    "hash": "sha256-foIoIMe+zgPISFmE10q4cwEUBhiah4nbD7UtjBumZYU=",
+    "version": "66"
+  },
   "removefile": {
     "hash": "sha256-UpNk27kGXnZss1ZXWVJU9jLz/NW63ZAZEDLhyCYoi9M=",
     "version": "45"