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add RUSTFLAGS to devShell #7

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15 changes: 9 additions & 6 deletions flake.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,13 @@

rust-toolchain = fenix.packages.${system}.fromManifestFile rust-manifest;

rustflags =
if pkgs.stdenv.hostPlatform.rust.rustcTargetSpec == "x86_64-unknown-linux-gnu" then
# Upstream defaults to lld on x86_64-unknown-linux-gnu, we need to use the system linker
"-Clinker-features=-lld -Clink-self-contained=-linker"
else
null;

# Crane-based Nix flake configuration.
# Based on https://github.com/ipetkov/crane/blob/master/examples/trunk-workspace/flake.nix
craneLib = (crane.mkLib pkgs).overrideToolchain rust-toolchain.defaultToolchain;
Expand Down Expand Up @@ -92,12 +99,7 @@
];

env = {
RUSTFLAGS =
if pkgs.stdenv.hostPlatform.rust.rustcTargetSpec == "x86_64-unknown-linux-gnu" then
# Upstream defaults to lld on x86_64-unknown-linux-gnu, we need to use the system linker
"-Clinker-features=-lld -Clink-self-contained=-linker"
else
null;
RUSTFLAGS = rustflags;
};
};

Expand Down Expand Up @@ -172,6 +174,7 @@
];

RUST_SRC_PATH = "${rust-toolchain.rust-src}/lib/rustlib/src/rust/library";
RUSTFLAGS = rustflags;

packages = [
# A script for quickly running tests.
Expand Down