Fix windows: Can't replace an executable that is currently open

tests/__init__.py

 import sys
 from pathlib import Path
 sys.path.append(str(Path(__file__).absolute().parent.parent / 'tools'))
-print(sys.path)
 
 from .dds import DDS, DDSFixtureParams, scoped_dds, dds_fixture_conf, dds_fixture_conf_1

tools/ci.py

         ('-T', opts.toolchain),
     )
 
-    self_build(paths.CUR_BUILT_DDS, opts.toolchain)
+    self_build(paths.CUR_BUILT_DDS, toolchain=opts.toolchain)
+    print('Bootstrap test PASSED!')
 
     if paths.SELF_TEST_REPO_DIR.exists():
         shutil.rmtree(paths.SELF_TEST_REPO_DIR)
     self_deps_build(paths.CUR_BUILT_DDS, opts.toolchain_2,
                     paths.SELF_TEST_REPO_DIR,
                     paths.PROJECT_ROOT / 'remote.dds')
-    proc.check_run(
-        paths.CUR_BUILT_DDS,
-        'build',
-        '--full',
-        '-T',
-        opts.toolchain_2,
-        ('--lm-index', paths.BUILD_DIR / 'INDEX.lmi'),
-    )
+    self_build(paths.CUR_BUILT_DDS, toolchain=opts.toolchain, lmi_path=paths.BUILD_DIR / 'INDEX.lmi')
 
     return pytest.main(['-v', '--durations=10', '-n4'])
 

tools/self_build.py

 import subprocess
 import sys
 
-from dds_ci import cli
+from dds_ci import cli, proc
 
 ROOT = Path(__file__).parent.parent.absolute()
 
 
-def self_build(exe: Path, toolchain: str):
+def self_build(exe: Path, *, toolchain: str, lmi_path: Path = None):
     # Copy the exe to another location, as windows refuses to let a binary be
     # replaced while it is executing
     new_exe = ROOT / '_dds.bootstrap-test.exe'
     shutil.copy2(exe, new_exe)
-    res = subprocess.run([str(new_exe), 'build', f'-FT{toolchain}'])
-    new_exe.unlink()
-    if res.returncode != 0:
-        raise RuntimeError('The bootstrap test failed!')
-    print('Bootstrap test PASSED!')
+    try:
+        proc.check_run(
+            new_exe,
+            'build',
+            '--full',
+            ('--toolchain', toolchain),
+            ('-I', lmi_path) if lmi_path else (),
+        )
+    finally:
+        new_exe.unlink()
 
 
 def main(argv: List[str]) -> int: