1 files changed, 56 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/os-specific/darwin/apple-source-releases/ICU/default.nix b/nixpkgs/pkgs/os-specific/darwin/apple-source-releases/ICU/default.nix
new file mode 100644
index 000000000000..032b1447463d
--- /dev/null
+++ b/nixpkgs/pkgs/os-specific/darwin/apple-source-releases/ICU/default.nix
@@ -0,0 +1,56 @@
+{ appleDerivation, python3 }:
+
+appleDerivation {
+  nativeBuildInputs = [ python3 ];
+
+  postPatch = ''
+    substituteInPlace makefile \
+      --replace "/usr/bin/" "" \
+      --replace "xcrun --sdk macosx --find" "echo -n" \
+      --replace "xcrun --sdk macosx.internal --show-sdk-path" "echo -n /dev/null" \
+      --replace "-install_name " "-install_name $out"
+
+    substituteInPlace icuSources/config/mh-darwin \
+      --replace "-install_name " "-install_name $out/"
+
+    # drop using impure /var/db/timezone/icutz
+    substituteInPlace makefile \
+      --replace '-DU_TIMEZONE_FILES_DIR=\"\\\"$(TZDATA_LOOKUP_DIR)\\\"\" -DU_TIMEZONE_PACKAGE=\"\\\"$(TZDATA_PACKAGE)\\\"\"' ""
+
+    # FIXME: This will cause `ld: warning: OS version (12.0) too small, changing to 13.0.0`, APPLE should fix it.
+    substituteInPlace makefile \
+      --replace "ZIPPERING_LDFLAGS=-Wl,-iosmac_version_min,12.0" "ZIPPERING_LDFLAGS="
+
+    # skip test for missing encodingSamples data
+    substituteInPlace icuSources/test/cintltst/ucsdetst.c \
+      --replace "&TestMailFilterCSS" "NULL"
+
+    patchShebangs icuSources
+  '';
+
+  # APPLE is using makefile to save its default configuration and call ./configure, so we hack makeFlags
+  # instead of configuring ourself, trying to stay abreast of APPLE.
+  dontConfigure = true;
+  makeFlags = [
+    "DSTROOT=$(out)"
+
+    # remove /usr prefix on include and lib
+    "PRIVATE_HDR_PREFIX="
+    "libdir=/lib/"
+
+    "DATA_INSTALL_DIR=/share/icu/"
+    "DATA_LOOKUP_DIR=$(DSTROOT)$(DATA_INSTALL_DIR)"
+
+    # hack to use our lower macos version
+    "MAC_OS_X_VERSION_MIN_REQUIRED=__MAC_OS_X_VERSION_MIN_REQUIRED"
+    "OSX_HOST_VERSION_MIN_STRING=$(MACOSX_DEPLOYMENT_TARGET)"
+  ];
+
+  doCheck = true;
+  checkTarget = "check";
+
+  postInstall = ''
+    # we don't need all those in usr/local
+    rm -rf $out/usr
+  '';
+}