Use bazel_7

Author: facundominguez

.github/workflows/build.yml

@@ -97,10 +97,7 @@ jobs:
       run: |
         mkdir -p ~/repo-cache ~/disk-cache
         echo common --repo_env=BAZEL_USE_CPP_ONLY_TOOLCHAIN=1 > .bazelrc.local
-        echo common --repo_env=BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN=1 >> .bazelrc.local
-        echo common --incompatible_enable_cc_toolchain_resolution >> .bazelrc.local
         echo common --toolchain_resolution_debug=cc >> .bazelrc.local
-        echo build --crosstool_top=@nixpkgs_config_cc//:toolchain >> .bazelrc.local
 
     - name: Clean stack caches
       run: rm -rf ~/.stack

WORKSPACE

@@ -48,15 +48,9 @@ nixpkgs_local_repository(
 load(
     "@io_tweag_rules_nixpkgs//nixpkgs:nixpkgs.bzl",
     "nixpkgs_package",
-    "nixpkgs_cc_configure",
     "nixpkgs_python_configure",
 )
 
-nixpkgs_cc_configure(
-    name = "nixpkgs_config_cc",
-    repository = "@rules_haskell//nixpkgs:default.nix",
-)
-
 nixpkgs_python_configure(repository = "@nixpkgs")
 
 load("@rules_haskell//haskell:cabal.bzl", "stack_snapshot")

shell.nix

@@ -13,7 +13,7 @@ mkShell {
   LANG="C.UTF-8";
 
   buildInputs = [
-    bazel_6
+    bazel_7
     git
     gnused
     nix