substrate-host: use right libclang output

12 jobs for master in 19 seconds (queued for 27 seconds)
Name Stage Failure
failed
polkadot-spec Fetch
$ nix-env --quiet -iA cachix -f https://cachix.org/api/v1/install
$ cachix use w3fpkgs
Configured https://w3fpkgs.cachix.org binary cache in /etc/nix/nix.conf
$ nix eval .#${CI_JOB_NAME}.outPath | cachix push w3fpkgs
warning: Git tree '/builds/florian/w3fpkgs' is dirty
error: flake 'git+file:///builds/florian/w3fpkgs?shallow=1' does not provide attribute 'packages.x86_64-linux.polkadot-spec.outPath', 'legacyPackages.x86_64-linux.polkadot-spec.outPath' or 'polkadot-spec.outPath'
All done.
Cleaning up file based variables
ERROR: Job failed: command terminated with exit code 1