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flake.nix
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flake.nix
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{
description = ''
Pure and reproducible overlay for binary distributed rust toolchains.
A compatible but better replacement for rust overlay of github:mozilla/nixpkgs-mozilla.
'';
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
flake-utils.url = "github:numtide/flake-utils";
};
outputs = { self, nixpkgs, flake-utils }: let
inherit (nixpkgs) lib;
inherit (lib)
elem filterAttrs head mapAttrs' optionalAttrs replaceStrings;
allSystems = [
"aarch64-darwin"
"aarch64-linux"
"armv5tel-linux"
"armv6l-linux"
"armv7a-linux"
"armv7l-linux"
"i686-linux"
# "mipsel-linux" # Missing `busybox`.
"powerpc64le-linux"
"riscv64-linux"
"x86_64-darwin"
"x86_64-linux"
];
overlay = import ./.;
defaultDistRoot = import ./lib/dist-root.nix;
mkManifests = distRoot: import ./lib/manifests.nix { inherit lib distRoot; };
# Builder to construct `rust-bin` interface on an existing `pkgs`.
# This would be immutable, non-intrusive and (hopefully) can benefit from
# flake eval-cache.
#
# Note that this does not contain compatible attrs for mozilla-overlay.
mkRustBin =
{ distRoot ? defaultDistRoot }:
pkgs:
lib.fix (rust-bin: import ./lib/rust-bin.nix {
inherit lib pkgs;
inherit (pkgs.rust) toRustTarget;
inherit (rust-bin) nightly;
manifests = mkManifests distRoot;
});
in {
lib = {
# Internal use only!
_internal = {
defaultManifests = mkManifests defaultDistRoot;
};
inherit mkRustBin;
};
overlays = {
default = overlay;
rust-overlay = overlay;
};
} // flake-utils.lib.eachSystem allSystems (system: let
pkgs = nixpkgs.legacyPackages.${system};
rust-bin = mkRustBin {} pkgs;
in {
# TODO: Flake outputs except `overlay[s]` are not stabilized yet.
packages = let
select = version: comps:
if comps ? default then
comps.default // {
minimal = comps.minimal or (throw "missing profile 'minimal' for ${version}");
}
else
null;
result =
mapAttrs' (version: comps: {
name = if version == "latest"
then "rust"
else "rust_${replaceStrings ["."] ["_"] version}";
value = select version comps;
}) rust-bin.stable //
mapAttrs' (version: comps: {
name = if version == "latest"
then "rust-nightly"
else "rust-nightly_${version}";
value = select version comps;
}) rust-bin.nightly //
mapAttrs' (version: comps: {
name = if version == "latest"
then "rust-beta"
else "rust-beta_${version}";
value = select version comps;
}) rust-bin.beta;
result' = filterAttrs (name: drv: drv != null) result;
in result' // { default = result'.rust; };
checks = let
inherit (rust-bin) fromRustupToolchain fromRustupToolchainFile stable beta nightly;
pkgs-compat = import nixpkgs { inherit system; overlays = [ overlay ]; };
inherit (pkgs-compat) latest rustChannelOf;
rustHostPlatform = pkgs.rust.toRustTarget pkgs.hostPlatform;
assertEq = (flake-utils.lib.check-utils system).isEqual;
assertUrl = drv: url: assertEq (head drv.src.urls) url;
in
# Check only tier 1 targets.
optionalAttrs (elem system [ "aarch64-linux" "x86_64-linux" ]) {
url-no-arch = assertUrl stable."1.48.0".rust-src "https://static.rust-lang.org/dist/2020-11-19/rust-src-1.48.0.tar.xz";
url-kind-nightly = assertUrl nightly."2021-01-01".rustc "https://static.rust-lang.org/dist/2021-01-01/rustc-nightly-${rustHostPlatform}.tar.xz";
url-kind-beta = assertUrl beta."2021-01-01".rustc "https://static.rust-lang.org/dist/2021-01-01/rustc-beta-${rustHostPlatform}.tar.xz";
name-stable = assertEq stable."1.48.0".rustc.name "rustc-1.48.0-${rustHostPlatform}";
name-beta = assertEq beta."2021-01-01".rustc.name "rustc-1.50.0-beta.2-2021-01-01-${rustHostPlatform}";
name-nightly = assertEq nightly."2021-01-01".rustc.name "rustc-1.51.0-nightly-2021-01-01-${rustHostPlatform}";
name-stable-profile-default = assertEq stable."1.51.0".default.name "rust-default-1.51.0";
name-stable-profile-minimal = assertEq stable."1.51.0".minimal.name "rust-minimal-1.51.0";
url-kind-2 = assertUrl stable."1.48.0".cargo "https://static.rust-lang.org/dist/2020-11-19/cargo-1.48.0-${rustHostPlatform}.tar.xz";
url-kind-0 = assertUrl stable."1.47.0".cargo "https://static.rust-lang.org/dist/2020-10-08/cargo-0.48.0-${rustHostPlatform}.tar.xz";
url-kind-1 = assertUrl stable."1.34.2".llvm-tools-preview "https://static.rust-lang.org/dist/2019-05-14/llvm-tools-1.34.2%20(6c2484dc3%202019-05-13)-${rustHostPlatform}.tar.xz";
url-fix = assertUrl nightly."2019-01-10".rustc "https://static.rust-lang.org/dist/2019-01-10/rustc-nightly-${rustHostPlatform}.tar.xz";
# 1.30.0 has `rustfmt` still in preview state.
rename-unavailable = assertEq (stable."1.30.0" ? rustfmt) false;
rename-available = assertEq stable."1.48.0".rustfmt stable."1.48.0".rustfmt-preview;
latest-stable-legacy = assertEq latest.rustChannels.stable.rustc stable.latest.rustc;
latest-beta-legacy = assertEq latest.rustChannels.beta.rustc beta.latest.rustc;
latest-nightly-legacy = assertEq latest.rustChannels.nightly.rustc nightly.latest.rustc;
rust-channel-of-stable = assertEq (rustChannelOf { channel = "stable"; }).rustc stable.latest.rustc;
rust-channel-of-beta = assertEq (rustChannelOf { channel = "beta"; }).rustc beta.latest.rustc;
rust-channel-of-nightly = assertEq (rustChannelOf { channel = "nightly"; }).rustc nightly.latest.rustc;
rust-channel-of-version = assertEq (rustChannelOf { channel = "1.48.0"; }).rustc stable."1.48.0".rustc;
rust-channel-of-nightly-date = assertEq (rustChannelOf { channel = "nightly"; date = "2021-01-01"; }).rustc nightly."2021-01-01".rustc;
rust-channel-of-beta-date = assertEq (rustChannelOf { channel = "beta"; date = "2021-01-01"; }).rustc beta."2021-01-01".rustc;
rustup-toolchain-stable = assertEq (fromRustupToolchain { channel = "stable"; }) stable.latest.default;
rustup-toolchain-beta = assertEq (fromRustupToolchain { channel = "beta"; }) beta.latest.default;
# rustup-toolchain-nightly = assertEq (fromRustupToolchain { channel = "nightly"; }) nightly.latest.default; # Not always available
rustup-toolchain-version = assertEq (fromRustupToolchain { channel = "1.51.0"; }) stable."1.51.0".default;
rustup-toolchain-nightly-date = assertEq (fromRustupToolchain { channel = "nightly-2021-01-01"; }) nightly."2021-01-01".default;
rustup-toolchain-beta-date = assertEq (fromRustupToolchain { channel = "beta-2021-01-01"; }) beta."2021-01-01".default;
rustup-toolchain-customization = assertEq
(fromRustupToolchain {
channel = "1.51.0";
components = [ "rustfmt" "rustc-dev" ];
targets = [ "wasm32-unknown-unknown" "aarch64-unknown-linux-gnu" ];
})
(stable."1.51.0".default.override {
extensions = [ "rustfmt" "rustc-dev" ];
targets = [ "wasm32-unknown-unknown" "aarch64-unknown-linux-gnu" ];
});
rustup-toolchain-profile-missing = assertEq (builtins.tryEval (fromRustupToolchain { channel = "1.51.0"; profile = "non_existent"; })).success false;
rustup-toolchain-profile-too-early = assertEq (builtins.tryEval (fromRustupToolchain { channel = "1.29.0"; profile = "minimal"; })).success false;
rustup-toolchain-profile-fallback = assertEq (fromRustupToolchain { channel = "1.29.0"; }) stable."1.29.0".rust;
rustup-toolchain-file-toml = assertEq
(fromRustupToolchainFile ./tests/rust-toolchain-toml)
(nightly."2021-03-25".default.override {
extensions = [ "rustfmt" "rustc-dev" ];
targets = [ "wasm32-unknown-unknown" "aarch64-unknown-linux-gnu" ];
});
rustup-toolchain-file-legacy = assertEq
(fromRustupToolchainFile ./tests/rust-toolchain-legacy)
nightly."2021-03-25".default;
rustup-toolchain-file-minimal = assertEq
(fromRustupToolchainFile ./tests/rust-toolchain-minimal)
(nightly."2021-03-25".minimal.override {
extensions = [ "rustfmt" "rustc-dev" ];
targets = [ "aarch64-unknown-linux-gnu" ];
});
latest-nightly-default = rust-bin.selectLatestNightlyWith (toolchain: toolchain.default);
# Darwin specific tests.
} // optionalAttrs (system == "aarch64-darwin") {
url-forward = assertUrl
nightly."2022-02-02".rust-docs
"https://static.rust-lang.org/dist/2022-02-02/rust-docs-nightly-x86_64-apple-darwin.tar.xz";
aarch64-darwin-use-x86-docs = rust-bin.stable."1.51.0".default.override {
targets = [ "x86_64-apple-darwin" ];
targetExtensions = [ "rust-docs" ];
};
};
});
}