Always use nixpkgs platform

We only configure nixpkgs compatible toolchains, so this should be added unconditionally.

Author: avdv

.bazelrc

@@ -1,3 +1,5 @@
+build --host_platform=@rules_nixpkgs_core//platforms:host
+
 # Remote Cache Configuration
 build:remote-cache --bes_results_url=https://app.buildbuddy.io/invocation/
 build:remote-cache --bes_backend=grpcs://remote.buildbuddy.io

.github/workflows/workflow.yaml

@@ -42,7 +42,6 @@ jobs:
       - name: Configure
         run: |
           cat >>.bazelrc.local <<EOF
-          build --host_platform=@io_tweag_rules_nixpkgs//nixpkgs/platforms:host
           build --config=remote-cache
           build --repository_cache=~/repo-cache/
           EOF