Do not infer signatures when compiling system

Author: josevalim

.github/workflows/ci.yml

@@ -106,8 +106,7 @@ jobs:
         run: |
           rm -rf .git
           # Recompile System without .git
-          cd lib/elixir && ../../bin/elixirc -o ebin lib/system.ex && cd -
-          taskset 1 make check_reproducible
+          taskset 1 make recompile_system check_reproducible
 
   test_windows:
     name: Windows Server 2022, OTP ${{ matrix.otp_version }}

Makefile

@@ -141,6 +141,9 @@ install: compile
 	done
 	"$(MAKE)" install_man
 
+recompile_system:
+	$(Q) cd lib/elixir && ../../$(ELIXIRC_MIN_SIG) "lib/system.ex" -o ebin;
+
 check_reproducible: compile
 	$(Q) echo "==> Checking for reproducible builds..."
 	$(Q) rm -rf lib/*/tmp/ebin_reproducible/