Use lld via .cargo/config.toml and not env vars

prisma · Dec 23, 2024 · d32bfcf · d32bfcf
1 parent 3668ee0
commit d32bfcf
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Showing 2 changed files with 12 additions and 2 deletions.
diff --git a/.envrc b/.envrc
@@ -53,3 +53,11 @@ if command -v nix &> /dev/null && [ -z ${DISABLE_NIX+x} ]
 then
     use nix
 fi
+
+if [[ "$OSTYPE" == "linux-gnu"* ]] && command -v lld &> /dev/null && [ ! -f .cargo/config.toml ]; then
+    mkdir -p .cargo
+    cat << EOF > .cargo/config.toml
+[target.$(uname -m)-unknown-linux-gnu]
+rustflags = ["-C", "link-arg=-fuse-ld=lld"]
+EOF
+fi
diff --git a/shell.nix b/shell.nix
@@ -45,7 +45,9 @@ pkgs.mkShell {
       useLld = "-C link-arg=-fuse-ld=lld";
     in
     pkgs.lib.optionalString pkgs.stdenv.isLinux ''
-      export CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUSTFLAGS="${useLld}"
-      export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_RUSTFLAGS="${useLld}"
+      if [ ! -f .cargo/config.toml ]; then
+        export CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUSTFLAGS="${useLld}"
+        export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_RUSTFLAGS="${useLld}"
+      fi
     '';
 }