374e6bcc40
Format all Nix files using the officially approved formatter,
making the CI check introduced in the previous commit succeed:
nix-build ci -A fmt.check
This is the next step of the of the [implementation](https://github.com/NixOS/nixfmt/issues/153)
of the accepted [RFC 166](https://github.com/NixOS/rfcs/pull/166).
This commit will lead to merge conflicts for a number of PRs,
up to an estimated ~1100 (~33%) among the PRs with activity in the past 2
months, but that should be lower than what it would be without the previous
[partial treewide format](https://github.com/NixOS/nixpkgs/pull/322537).
Merge conflicts caused by this commit can now automatically be resolved while rebasing using the
[auto-rebase script](8616af08d9/maintainers/scripts/auto-rebase).
If you run into any problems regarding any of this, please reach out to the
[formatting team](https://nixos.org/community/teams/formatting/) by
pinging @NixOS/nix-formatting.
562 lines
20 KiB
Nix
562 lines
20 KiB
Nix
{ lib }:
|
|
|
|
let
|
|
inherit (lib)
|
|
any
|
|
filterAttrs
|
|
foldl
|
|
hasInfix
|
|
isAttrs
|
|
isFunction
|
|
isList
|
|
mapAttrs
|
|
optional
|
|
optionalAttrs
|
|
optionalString
|
|
removeSuffix
|
|
replaceStrings
|
|
toUpper
|
|
;
|
|
|
|
inherit (lib.strings) toJSON;
|
|
|
|
doubles = import ./doubles.nix { inherit lib; };
|
|
parse = import ./parse.nix { inherit lib; };
|
|
inspect = import ./inspect.nix { inherit lib; };
|
|
platforms = import ./platforms.nix { inherit lib; };
|
|
examples = import ./examples.nix { inherit lib; };
|
|
architectures = import ./architectures.nix { inherit lib; };
|
|
|
|
/**
|
|
Elaborated systems contain functions, which means that they don't satisfy
|
|
`==` for a lack of reflexivity.
|
|
|
|
They might *appear* to satisfy `==` reflexivity when the same exact value is
|
|
compared to itself, because object identity is used as an "optimization";
|
|
compare the value with a reconstruction of itself, e.g. with `f == a: f a`,
|
|
or perhaps calling `elaborate` twice, and one will see reflexivity fail as described.
|
|
|
|
Hence a custom equality test.
|
|
|
|
Note that this does not canonicalize the systems, so you'll want to make sure
|
|
both arguments have been `elaborate`-d.
|
|
*/
|
|
equals =
|
|
let
|
|
removeFunctions = a: filterAttrs (_: v: !isFunction v) a;
|
|
in
|
|
a: b: removeFunctions a == removeFunctions b;
|
|
|
|
/**
|
|
List of all Nix system doubles the nixpkgs flake will expose the package set
|
|
for. All systems listed here must be supported by nixpkgs as `localSystem`.
|
|
|
|
:::{.warning}
|
|
This attribute is considered experimental and is subject to change.
|
|
:::
|
|
*/
|
|
flakeExposed = import ./flake-systems.nix { };
|
|
|
|
# Turn localSystem or crossSystem, which could be system-string or attrset, into
|
|
# attrset.
|
|
systemToAttrs =
|
|
systemOrArgs: if isAttrs systemOrArgs then systemOrArgs else { system = systemOrArgs; };
|
|
|
|
# Elaborate a `localSystem` or `crossSystem` so that it contains everything
|
|
# necessary.
|
|
#
|
|
# `parsed` is inferred from args, both because there are two options with one
|
|
# clearly preferred, and to prevent cycles. A simpler fixed point where the RHS
|
|
# always just used `final.*` would fail on both counts.
|
|
elaborate =
|
|
systemOrArgs:
|
|
let
|
|
allArgs = systemToAttrs systemOrArgs;
|
|
|
|
# Those two will always be derived from "config", if given, so they should NOT
|
|
# be overridden further down with "// args".
|
|
args = builtins.removeAttrs allArgs [
|
|
"parsed"
|
|
"system"
|
|
];
|
|
|
|
# TODO: deprecate args.rustc in favour of args.rust after 23.05 is EOL.
|
|
rust = args.rust or args.rustc or { };
|
|
|
|
final =
|
|
{
|
|
# Prefer to parse `config` as it is strictly more informative.
|
|
parsed = parse.mkSystemFromString (args.config or allArgs.system);
|
|
# This can be losslessly-extracted from `parsed` iff parsing succeeds.
|
|
system = parse.doubleFromSystem final.parsed;
|
|
# TODO: This currently can't be losslessly-extracted from `parsed`, for example
|
|
# because of -mingw32.
|
|
config = parse.tripleFromSystem final.parsed;
|
|
# Determine whether we can execute binaries built for the provided platform.
|
|
canExecute =
|
|
platform:
|
|
final.isAndroid == platform.isAndroid
|
|
&& parse.isCompatible final.parsed.cpu platform.parsed.cpu
|
|
&& final.parsed.kernel == platform.parsed.kernel;
|
|
isCompatible =
|
|
_:
|
|
throw "2022-05-23: isCompatible has been removed in favor of canExecute, refer to the 22.11 changelog for details";
|
|
# Derived meta-data
|
|
useLLVM = final.isFreeBSD || final.isOpenBSD;
|
|
|
|
libc =
|
|
if final.isDarwin then
|
|
"libSystem"
|
|
else if final.isMinGW then
|
|
"msvcrt"
|
|
else if final.isWasi then
|
|
"wasilibc"
|
|
else if final.isWasm && !final.isWasi then
|
|
null
|
|
else if final.isRedox then
|
|
"relibc"
|
|
else if final.isMusl then
|
|
"musl"
|
|
else if final.isUClibc then
|
|
"uclibc"
|
|
else if final.isAndroid then
|
|
"bionic"
|
|
else if final.isLLVMLibc then
|
|
"llvm"
|
|
else if
|
|
final.isLinux # default
|
|
then
|
|
"glibc"
|
|
else if final.isFreeBSD then
|
|
"fblibc"
|
|
else if final.isOpenBSD then
|
|
"oblibc"
|
|
else if final.isNetBSD then
|
|
"nblibc"
|
|
else if final.isAvr then
|
|
"avrlibc"
|
|
else if final.isGhcjs then
|
|
null
|
|
else if final.isNone then
|
|
"newlib"
|
|
# TODO(@Ericson2314) think more about other operating systems
|
|
else
|
|
"native/impure";
|
|
# Choose what linker we wish to use by default. Someday we might also
|
|
# choose the C compiler, runtime library, C++ standard library, etc. in
|
|
# this way, nice and orthogonally, and deprecate `useLLVM`. But due to
|
|
# the monolithic GCC build we cannot actually make those choices
|
|
# independently, so we are just doing `linker` and keeping `useLLVM` for
|
|
# now.
|
|
linker =
|
|
if final.useLLVM or false then
|
|
"lld"
|
|
else if final.isDarwin then
|
|
"cctools"
|
|
# "bfd" and "gold" both come from GNU binutils. The existence of Gold
|
|
# is why we use the more obscure "bfd" and not "binutils" for this
|
|
# choice.
|
|
else
|
|
"bfd";
|
|
# The standard lib directory name that non-nixpkgs binaries distributed
|
|
# for this platform normally assume.
|
|
libDir =
|
|
if final.isLinux then
|
|
if final.isx86_64 || final.isMips64 || final.isPower64 then "lib64" else "lib"
|
|
else
|
|
null;
|
|
extensions =
|
|
optionalAttrs final.hasSharedLibraries {
|
|
sharedLibrary =
|
|
if final.isDarwin then
|
|
".dylib"
|
|
else if final.isWindows then
|
|
".dll"
|
|
else
|
|
".so";
|
|
}
|
|
// {
|
|
staticLibrary = if final.isWindows then ".lib" else ".a";
|
|
library = if final.isStatic then final.extensions.staticLibrary else final.extensions.sharedLibrary;
|
|
executable = if final.isWindows then ".exe" else "";
|
|
};
|
|
# Misc boolean options
|
|
useAndroidPrebuilt = false;
|
|
useiOSPrebuilt = false;
|
|
|
|
# Output from uname
|
|
uname = {
|
|
# uname -s
|
|
system =
|
|
{
|
|
linux = "Linux";
|
|
windows = "Windows";
|
|
darwin = "Darwin";
|
|
netbsd = "NetBSD";
|
|
freebsd = "FreeBSD";
|
|
openbsd = "OpenBSD";
|
|
wasi = "Wasi";
|
|
redox = "Redox";
|
|
genode = "Genode";
|
|
}
|
|
.${final.parsed.kernel.name} or null;
|
|
|
|
# uname -m
|
|
processor =
|
|
if final.isPower64 then
|
|
"ppc64${optionalString final.isLittleEndian "le"}"
|
|
else if final.isPower then
|
|
"ppc${optionalString final.isLittleEndian "le"}"
|
|
else if final.isMips64 then
|
|
"mips64" # endianness is *not* included on mips64
|
|
else
|
|
final.parsed.cpu.name;
|
|
|
|
# uname -r
|
|
release = null;
|
|
};
|
|
|
|
# It is important that hasSharedLibraries==false when the platform has no
|
|
# dynamic library loader. Various tools (including the gcc build system)
|
|
# have knowledge of which platforms are incapable of dynamic linking, and
|
|
# will still build on/for those platforms with --enable-shared, but simply
|
|
# omit any `.so` build products such as libgcc_s.so. When that happens,
|
|
# it causes hard-to-troubleshoot build failures.
|
|
hasSharedLibraries =
|
|
with final;
|
|
(
|
|
isAndroid
|
|
|| isGnu
|
|
|| isMusl # Linux (allows multiple libcs)
|
|
|| isDarwin
|
|
|| isSunOS
|
|
|| isOpenBSD
|
|
|| isFreeBSD
|
|
|| isNetBSD # BSDs
|
|
|| isCygwin
|
|
|| isMinGW
|
|
|| isWindows # Windows
|
|
|| isWasm # WASM
|
|
)
|
|
&& !isStatic;
|
|
|
|
# The difference between `isStatic` and `hasSharedLibraries` is mainly the
|
|
# addition of the `staticMarker` (see make-derivation.nix). Some
|
|
# platforms, like embedded machines without a libc (e.g. arm-none-eabi)
|
|
# don't support dynamic linking, but don't get the `staticMarker`.
|
|
# `pkgsStatic` sets `isStatic=true`, so `pkgsStatic.hostPlatform` always
|
|
# has the `staticMarker`.
|
|
isStatic = final.isWasi || final.isRedox;
|
|
|
|
# Just a guess, based on `system`
|
|
inherit
|
|
(
|
|
{
|
|
linux-kernel = args.linux-kernel or { };
|
|
gcc = args.gcc or { };
|
|
}
|
|
// platforms.select final
|
|
)
|
|
linux-kernel
|
|
gcc
|
|
;
|
|
|
|
# TODO: remove after 23.05 is EOL, with an error pointing to the rust.* attrs.
|
|
rustc = args.rustc or { };
|
|
|
|
linuxArch =
|
|
if final.isAarch32 then
|
|
"arm"
|
|
else if final.isAarch64 then
|
|
"arm64"
|
|
else if final.isx86_32 then
|
|
"i386"
|
|
else if final.isx86_64 then
|
|
"x86_64"
|
|
# linux kernel does not distinguish microblaze/microblazeel
|
|
else if final.isMicroBlaze then
|
|
"microblaze"
|
|
else if final.isMips32 then
|
|
"mips"
|
|
else if final.isMips64 then
|
|
"mips" # linux kernel does not distinguish mips32/mips64
|
|
else if final.isPower then
|
|
"powerpc"
|
|
else if final.isRiscV then
|
|
"riscv"
|
|
else if final.isS390 then
|
|
"s390"
|
|
else if final.isLoongArch64 then
|
|
"loongarch"
|
|
else
|
|
final.parsed.cpu.name;
|
|
|
|
# https://source.denx.de/u-boot/u-boot/-/blob/9bfb567e5f1bfe7de8eb41f8c6d00f49d2b9a426/common/image.c#L81-106
|
|
ubootArch =
|
|
if final.isx86_32 then
|
|
"x86" # not i386
|
|
else if final.isMips64 then
|
|
"mips64" # uboot *does* distinguish between mips32/mips64
|
|
else
|
|
final.linuxArch; # other cases appear to agree with linuxArch
|
|
|
|
qemuArch =
|
|
if final.isAarch32 then
|
|
"arm"
|
|
else if final.isS390 && !final.isS390x then
|
|
null
|
|
else if final.isx86_64 then
|
|
"x86_64"
|
|
else if final.isx86 then
|
|
"i386"
|
|
else if final.isMips64n32 then
|
|
"mipsn32${optionalString final.isLittleEndian "el"}"
|
|
else if final.isMips64 then
|
|
"mips64${optionalString final.isLittleEndian "el"}"
|
|
else
|
|
final.uname.processor;
|
|
|
|
# Name used by UEFI for architectures.
|
|
efiArch =
|
|
if final.isx86_32 then
|
|
"ia32"
|
|
else if final.isx86_64 then
|
|
"x64"
|
|
else if final.isAarch32 then
|
|
"arm"
|
|
else if final.isAarch64 then
|
|
"aa64"
|
|
else
|
|
final.parsed.cpu.name;
|
|
|
|
darwinArch =
|
|
{
|
|
armv7a = "armv7";
|
|
aarch64 = "arm64";
|
|
}
|
|
.${final.parsed.cpu.name} or final.parsed.cpu.name;
|
|
|
|
darwinPlatform =
|
|
if final.isMacOS then
|
|
"macos"
|
|
else if final.isiOS then
|
|
"ios"
|
|
else
|
|
null;
|
|
# The canonical name for this attribute is darwinSdkVersion, but some
|
|
# platforms define the old name "sdkVer".
|
|
darwinSdkVersion = final.sdkVer or "11.3";
|
|
darwinMinVersion = final.darwinSdkVersion;
|
|
darwinMinVersionVariable =
|
|
if final.isMacOS then
|
|
"MACOSX_DEPLOYMENT_TARGET"
|
|
else if final.isiOS then
|
|
"IPHONEOS_DEPLOYMENT_TARGET"
|
|
else
|
|
null;
|
|
|
|
# Remove before 25.05
|
|
androidSdkVersion =
|
|
if (args ? sdkVer && !args ? androidSdkVersion) then
|
|
throw "For android `sdkVer` has been renamed to `androidSdkVersion`"
|
|
else if (args ? androidSdkVersion) then
|
|
args.androidSdkVersion
|
|
else
|
|
null;
|
|
androidNdkVersion =
|
|
if (args ? ndkVer && !args ? androidNdkVersion) then
|
|
throw "For android `ndkVer` has been renamed to `androidNdkVersion`"
|
|
else if (args ? androidSdkVersion) then
|
|
args.androidNdkVersion
|
|
else
|
|
null;
|
|
}
|
|
// (
|
|
let
|
|
selectEmulator =
|
|
pkgs:
|
|
let
|
|
wine = (pkgs.winePackagesFor "wine${toString final.parsed.cpu.bits}").minimal;
|
|
in
|
|
# Note: we guarantee that the return value is either `null` or a path
|
|
# to an emulator program. That is, if an emulator requires additional
|
|
# arguments, a wrapper should be used.
|
|
if pkgs.stdenv.hostPlatform.canExecute final then
|
|
lib.getExe (pkgs.writeShellScriptBin "exec" ''exec "$@"'')
|
|
else if final.isWindows then
|
|
"${wine}/bin/wine${optionalString (final.parsed.cpu.bits == 64) "64"}"
|
|
else if final.isLinux && pkgs.stdenv.hostPlatform.isLinux && final.qemuArch != null then
|
|
"${pkgs.qemu-user}/bin/qemu-${final.qemuArch}"
|
|
else if final.isWasi then
|
|
"${pkgs.wasmtime}/bin/wasmtime"
|
|
else if final.isMmix then
|
|
"${pkgs.mmixware}/bin/mmix"
|
|
else
|
|
null;
|
|
in
|
|
{
|
|
emulatorAvailable = pkgs: (selectEmulator pkgs) != null;
|
|
|
|
# whether final.emulator pkgs.pkgsStatic works
|
|
staticEmulatorAvailable =
|
|
pkgs: final.emulatorAvailable pkgs && (final.isLinux || final.isWasi || final.isMmix);
|
|
|
|
emulator =
|
|
pkgs:
|
|
if (final.emulatorAvailable pkgs) then
|
|
selectEmulator pkgs
|
|
else
|
|
throw "Don't know how to run ${final.config} executables.";
|
|
|
|
}
|
|
)
|
|
// mapAttrs (n: v: v final.parsed) inspect.predicates
|
|
// mapAttrs (n: v: v final.gcc.arch or "default") architectures.predicates
|
|
// args
|
|
// {
|
|
rust = rust // {
|
|
# Once args.rustc.platform.target-family is deprecated and
|
|
# removed, there will no longer be any need to modify any
|
|
# values from args.rust.platform, so we can drop all the
|
|
# "args ? rust" etc. checks, and merge args.rust.platform in
|
|
# /after/.
|
|
platform = rust.platform or { } // {
|
|
# https://doc.rust-lang.org/reference/conditional-compilation.html#target_arch
|
|
arch =
|
|
if rust ? platform then
|
|
rust.platform.arch
|
|
else if final.isAarch32 then
|
|
"arm"
|
|
else if final.isMips64 then
|
|
"mips64" # never add "el" suffix
|
|
else if final.isPower64 then
|
|
"powerpc64" # never add "le" suffix
|
|
else
|
|
final.parsed.cpu.name;
|
|
|
|
# https://doc.rust-lang.org/reference/conditional-compilation.html#target_os
|
|
os =
|
|
if rust ? platform then
|
|
rust.platform.os or "none"
|
|
else if final.isDarwin then
|
|
"macos"
|
|
else if final.isWasm && !final.isWasi then
|
|
"unknown" # Needed for {wasm32,wasm64}-unknown-unknown.
|
|
else
|
|
final.parsed.kernel.name;
|
|
|
|
# https://doc.rust-lang.org/reference/conditional-compilation.html#target_family
|
|
target-family =
|
|
if args ? rust.platform.target-family then
|
|
args.rust.platform.target-family
|
|
else if args ? rustc.platform.target-family then
|
|
(
|
|
# Since https://github.com/rust-lang/rust/pull/84072
|
|
# `target-family` is a list instead of single value.
|
|
let
|
|
f = args.rustc.platform.target-family;
|
|
in
|
|
if isList f then f else [ f ]
|
|
)
|
|
else
|
|
optional final.isUnix "unix" ++ optional final.isWindows "windows" ++ optional final.isWasm "wasm";
|
|
|
|
# https://doc.rust-lang.org/reference/conditional-compilation.html#target_vendor
|
|
vendor =
|
|
let
|
|
inherit (final.parsed) vendor;
|
|
in
|
|
rust.platform.vendor or {
|
|
"w64" = "pc";
|
|
}
|
|
.${vendor.name} or vendor.name;
|
|
};
|
|
|
|
# The name of the rust target, even if it is custom. Adjustments are
|
|
# because rust has slightly different naming conventions than we do.
|
|
rustcTarget =
|
|
let
|
|
inherit (final.parsed) cpu kernel abi;
|
|
cpu_ =
|
|
rust.platform.arch or {
|
|
"armv7a" = "armv7";
|
|
"armv7l" = "armv7";
|
|
"armv6l" = "arm";
|
|
"armv5tel" = "armv5te";
|
|
"riscv32" = "riscv32gc";
|
|
"riscv64" = "riscv64gc";
|
|
}
|
|
.${cpu.name} or cpu.name;
|
|
vendor_ = final.rust.platform.vendor;
|
|
# TODO: deprecate args.rustc in favour of args.rust after 23.05 is EOL.
|
|
in
|
|
args.rust.rustcTarget or args.rustc.config or (
|
|
# Rust uses `wasm32-wasip?` rather than `wasm32-unknown-wasi`.
|
|
# We cannot know which subversion does the user want, and
|
|
# currently use WASI 0.1 as default for compatibility. Custom
|
|
# users can set `rust.rustcTarget` to override it.
|
|
if final.isWasi then
|
|
"${cpu_}-wasip1"
|
|
else
|
|
"${cpu_}-${vendor_}-${kernel.name}${optionalString (abi.name != "unknown") "-${abi.name}"}"
|
|
);
|
|
|
|
# The name of the rust target if it is standard, or the json file
|
|
# containing the custom target spec.
|
|
rustcTargetSpec =
|
|
rust.rustcTargetSpec or (
|
|
if rust ? platform then
|
|
builtins.toFile (final.rust.rustcTarget + ".json") (toJSON rust.platform)
|
|
else
|
|
final.rust.rustcTarget
|
|
);
|
|
|
|
# The name of the rust target if it is standard, or the
|
|
# basename of the file containing the custom target spec,
|
|
# without the .json extension.
|
|
#
|
|
# This is the name used by Cargo for target subdirectories.
|
|
cargoShortTarget = removeSuffix ".json" (baseNameOf "${final.rust.rustcTargetSpec}");
|
|
|
|
# When used as part of an environment variable name, triples are
|
|
# uppercased and have all hyphens replaced by underscores:
|
|
#
|
|
# https://github.com/rust-lang/cargo/pull/9169
|
|
# https://github.com/rust-lang/cargo/issues/8285#issuecomment-634202431
|
|
cargoEnvVarTarget = replaceStrings [ "-" ] [ "_" ] (toUpper final.rust.cargoShortTarget);
|
|
|
|
# True if the target is no_std
|
|
# https://github.com/rust-lang/rust/blob/2e44c17c12cec45b6a682b1e53a04ac5b5fcc9d2/src/bootstrap/config.rs#L415-L421
|
|
isNoStdTarget = any (t: hasInfix t final.rust.rustcTarget) [
|
|
"-none"
|
|
"nvptx"
|
|
"switch"
|
|
"-uefi"
|
|
];
|
|
};
|
|
};
|
|
in
|
|
assert final.useAndroidPrebuilt -> final.isAndroid;
|
|
assert foldl (pass: { assertion, message }: if assertion final then pass else throw message) true (
|
|
final.parsed.abi.assertions or [ ]
|
|
);
|
|
final;
|
|
|
|
in
|
|
|
|
# Everything in this attrset is the public interface of the file.
|
|
{
|
|
inherit
|
|
architectures
|
|
doubles
|
|
elaborate
|
|
equals
|
|
examples
|
|
flakeExposed
|
|
inspect
|
|
parse
|
|
platforms
|
|
systemToAttrs
|
|
;
|
|
}
|