hack nimbus-build-system/github to pick up custom Nim repo/branch

.github/actions/nimbus-build-system/action.yml

@@ -11,7 +11,8 @@ inputs:
     default: "amd64"
   nim_version:
     description: "Nim version"
-    default: "version-1-6"
+    # FIXME: change this once https://github.com/nim-lang/Nim/issues/23214 gets upstreamed/backported
+    default: "f45bdea94ac4ed9a9bae03426275456aeb0cab2a"
   shell:
     description: "Shell to run commands in"
     default: "bash --noprofile --norc -e -o pipefail"
@@ -160,6 +161,10 @@ runs:
       shell: ${{ inputs.shell }} {0}
       run: echo "NIM_COMMIT=${{ inputs.nim_version }}" >> ${GITHUB_ENV}
 
+    # FIXME: drop this once https://github.com/nim-lang/Nim/issues/23214 gets upstreamed/backported
+    - name: Set NIM_REPO
+      run: echo "NIM_REPO='https://github.com/gmega/Nim'" >> ${GITHUB_ENV}
+
     - name: Build Nim and Codex dependencies
       shell: ${{ inputs.shell }} {0}
       run: |

.gitmodules

@@ -1,8 +1,8 @@
 [submodule "vendor/nimbus-build-system"]
 	path = vendor/nimbus-build-system
-	url = https://github.com/status-im/nimbus-build-system.git
+	url = https://github.com/gmega/nimbus-build-system.git
 	ignore = untracked
-	branch = master
+	branch = feat/configurable-nim-repo
 [submodule "vendor/nim-libp2p"]
 	path = vendor/nim-libp2p
 	url = https://github.com/status-im/nim-libp2p.git