Allow migrating compilers using include_build

README.md

@@ -130,6 +130,10 @@ __migrator:
   # The bot will skip noarch feedstocks by default.
   include_noarch: false
 
+  # If `include_build` is set to true, the bot will include build requirements in the migration.
+  # The bot will skip build requirements by default, which prevents compiler migrations.
+  include_build: false
+
   # The pr_limit controls how many PRs that bot makes in a single run.
   # Typical values range from 5 (small/slow) to 30 (large/fast). If not given,
   # the bot will scale this limit automatically to make new migrations more responsive

conda_forge_tick/make_migrators.py

@@ -256,6 +256,7 @@ def add_rebuild_migration_yaml(
         excluded_feedstocks,
         exclude_pinned_pkgs=exclude_pinned_pkgs,
         include_noarch=config.get("include_noarch", False),
+        include_build=config.get("include_build", False),
     )
 
     # Note at this point the graph is made of all packages that have a

conda_forge_tick/migrators/migration_yaml.py

@@ -657,6 +657,7 @@
     excluded_feedstocks: MutableSet[str] = None,
     exclude_pinned_pkgs: bool = True,
     include_noarch: bool = False,
+    include_build: bool = False,
 ) -> nx.DiGraph:
     total_graph = copy.deepcopy(gx)
     excluded_feedstocks = set() if excluded_feedstocks is None else excluded_feedstocks
@@ -677,7 +678,10 @@
         requirements = attrs.get("requirements", {})
         host = requirements.get("host", set())
         build = requirements.get("build", set())
-        bh = host or build
+        if include_build:
+            bh = host | build
+        else:
+            bh = host or build
         only_python = "python" in package_names
         inclusion_criteria = bh & set(package_names) and (
             include_noarch or not all_noarch(attrs, only_python=only_python)
@@ -687,7 +691,7 @@
         all_reqs = requirements.get("run", set())
         if inclusion_criteria:
             all_reqs = all_reqs | requirements.get("test", set())
-            all_reqs = all_reqs | (host or build)
+            all_reqs = all_reqs | bh
         rq = get_deps_from_outputs_lut(
             all_reqs,
             gx.graph["outputs_lut"],