nix: rename default-nix to default-amd64.nix

Signed-off-by: Michal Biesek <[email protected]>

build-aux/release.sh

@@ -45,19 +45,7 @@ mkdir -p /nix
 
 NIX_ARGS="--extra-experimental-features nix-command --print-build-logs --option cores $(nproc) --option max-jobs $(nproc)"
 
-$RUNTIME run --rm $RUNTIME_EXTRA_ARGS --privileged -v /nix:/nix -v ${PWD}:${PWD} -w ${PWD} ${NIX_IMAGE} \
-    nix $NIX_ARGS build --file nix/
-cp ./result/bin/crun $OUTDIR/crun-$VERSION-linux-amd64
-
-rm -rf result
-
-$RUNTIME run --rm $RUNTIME_EXTRA_ARGS --privileged -v /nix:/nix -v ${PWD}:${PWD} -w ${PWD} ${NIX_IMAGE} \
-    nix $NIX_ARGS build --file nix/ --arg enableSystemd false
-cp ./result/bin/crun $OUTDIR/crun-$VERSION-linux-amd64-disable-systemd
-
-rm -rf result
-
-for ARCH in arm64 ppc64le riscv64; do
+for ARCH in amd64 arm64 ppc64le riscv64; do
     $RUNTIME run --rm $RUNTIME_EXTRA_ARGS --privileged -v /nix:/nix -v ${PWD}:${PWD} -w ${PWD} ${NIX_IMAGE} \
         nix $NIX_ARGS build --file nix/default-${ARCH}.nix
     cp ./result/bin/crun $OUTDIR/crun-$VERSION-linux-${ARCH}