nixpkgs/pkgs/development/compilers/swift/default.nix
Randy Eckenrode efdf4e9d1f
swift: use stdenv libc++ on Darwin
Swift uses libc++ 15, but it should really be using the same libc++ from
the stdenv. While not strictly needed currently, Swift 5.9 will support
C++ interop. If Swift is not using the stdenv C++, any C++ library used
with interop would need to be rebuilt against the Swift libc++.
2023-08-04 22:21:10 -04:00

121 lines
4.1 KiB
Nix
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

{ lib
, pkgs
, newScope
, darwin
, llvmPackages
, llvmPackages_15
, overrideCC
}:
let
swiftLlvmPackages = llvmPackages_15;
self = rec {
callPackage = newScope self;
# Current versions of Swift on Darwin require macOS SDK 10.15 at least.
# Re-export this so we can rely on the minimum Swift SDK elsewhere.
apple_sdk = pkgs.darwin.apple_sdk_11_0;
# Swift builds its own Clang for internal use. We wrap that clang with a
# cc-wrapper derived from the clang configured below. Because cc-wrapper
# applies a specific resource-root, the two versions are best matched, or
# we'll often run into compilation errors.
#
# The following selects the correct Clang version, matching the version
# used in Swift, and applies the same libc overrides as `apple_sdk.stdenv`.
clang = if pkgs.stdenv.isDarwin
then
swiftLlvmPackages.clang.override rec {
libc = apple_sdk.Libsystem;
bintools = pkgs.bintools.override { inherit libc; };
# Ensure that Swifts internal clang uses the same libc++ and libc++abi as the
# default Darwin stdenv. Using the default libc++ avoids issues (such as crashes)
# that can happen when a Swift application dynamically links different versions
# of libc++ and libc++abi than libraries it links are using.
inherit (llvmPackages) libcxx;
extraPackages = [
llvmPackages.libcxxabi
# Use the compiler-rt associated with clang, but use the libc++abi from the stdenv
# to avoid linking against two different versions (for the same reasons as above).
(swiftLlvmPackages.compiler-rt.override {
inherit (llvmPackages) libcxxabi;
})
];
}
else
swiftLlvmPackages.clang;
# Overrides that create a useful environment for swift packages, allowing
# packaging with `swiftPackages.callPackage`. These are similar to
# `apple_sdk_11_0.callPackage`, with our clang on top.
inherit (clang) bintools;
stdenv = overrideCC pkgs.stdenv clang;
darwin = pkgs.darwin.overrideScope (_: prev: {
inherit apple_sdk;
inherit (apple_sdk) Libsystem LibsystemCross libcharset libunwind objc4 configd IOKit Security;
CF = apple_sdk.CoreFoundation;
});
xcodebuild = pkgs.xcbuild.override {
inherit (apple_sdk.frameworks) CoreServices CoreGraphics ImageIO;
inherit stdenv;
sdkVer = "10.15";
};
xcbuild = xcodebuild;
swift-unwrapped = callPackage ./compiler {
inherit (darwin) DarwinTools cctools sigtool;
inherit (apple_sdk) MacOSX-SDK CLTools_Executables;
inherit (apple_sdk.frameworks) CoreServices Foundation Combine;
};
swiftNoSwiftDriver = callPackage ./wrapper {
swift = swift-unwrapped;
useSwiftDriver = false;
};
Dispatch = if stdenv.isDarwin
then null # part of libsystem
else callPackage ./libdispatch { swift = swiftNoSwiftDriver; };
Foundation = if stdenv.isDarwin
then apple_sdk.frameworks.Foundation
else callPackage ./foundation { swift = swiftNoSwiftDriver; };
# TODO: Apple distributes a binary XCTest with Xcode, but it is not part of
# CLTools (or SUS), so would have to figure out how to fetch it. The binary
# version has several extra features, like a test runner and ObjC support.
XCTest = callPackage ./xctest {
inherit (darwin) DarwinTools;
swift = swiftNoSwiftDriver;
};
swiftpm = callPackage ./swiftpm {
inherit (darwin) DarwinTools cctools;
inherit (apple_sdk.frameworks) CryptoKit LocalAuthentication;
swift = swiftNoSwiftDriver;
};
swift-driver = callPackage ./swift-driver {
swift = swiftNoSwiftDriver;
};
swift = callPackage ./wrapper {
swift = swift-unwrapped;
};
sourcekit-lsp = callPackage ./sourcekit-lsp {
inherit (apple_sdk.frameworks) CryptoKit LocalAuthentication;
};
swift-docc = callPackage ./swift-docc {
inherit (apple_sdk.frameworks) CryptoKit LocalAuthentication;
};
swift-format = callPackage ./swift-format { };
};
in self