diff --git a/nimporter/nexporter.py b/nimporter/nexporter.py
index 46360bc..e9f54c9 100644
--- a/nimporter/nexporter.py
+++ b/nimporter/nexporter.py
@@ -256,22 +256,17 @@ def compile_extensions_to_c(platforms: List[str], root: Path) -> None:
                     prevent_win32_max_path_length_error(out_dir)
     return
 
-
-def _is_valid_identifier(string: str) -> Union[Match[str], None, bool]:
-        import re
-        match = re.search('^[A-Za-z_][A-Z-a-z0-9_\\-]*', string)
-        return match and len(match.string) == len(string)
-
-
 def _is_semver(string: str) -> bool:
+    import re
     try:
-        lib_name, lib_version = string.rsplit('-', maxsplit=1)
-        assert _is_valid_identifier(lib_name)
-
-        major, minor, patch = lib_version.split('.')
-        assert major.isdigit()
-        assert minor.isdigit()
-        assert patch.isdigit()
+        match = re.search(
+            r'(\w+)-(?<major>\d+)\.(?<minor>\d+)\.(?<patch>\d+)(-?.+)',
+            string
+        )
+        assert match
+        assert match['major'].isdigit()
+        assert match['minor'].isdigit()
+        assert match['patch'].isdigit()
 
         return True
     except:
@@ -314,6 +309,13 @@ def prevent_win32_max_path_length_error(path: Path) -> None:
                         mod_name = '@'.join(segments[index:])
                         break
 
+                # Local imports which don't include a semver
+                else:
+                    mod_name = item.name.replace('@m', '')
+
             new_name = ic(f'NIMPORTER@{mod_name}')
+            assert not item.with_name(new_name).exists(), (
+                f"Bug with @ replacements: {new_name} shouldn't already exist"
+            )
             item.replace(item.with_name(new_name))
     return
diff --git a/pyproject.toml b/pyproject.toml
index d72bac3..fe654b7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,21 +4,54 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
 name = "nimporter"
-version = "2.0.0"
+version = "2.0.1"
 description = "Compile Nim extensions for Python when imported!"
-authors = ["Pebaz <https://github.com/Pebaz>", "SekouDiaoNlp <diao.sekou.nlp@gmail.com>"]
+authors = [
+    "Pebaz <https://github.com/Pebaz>",
+    "SekouDiaoNlp <diao.sekou.nlp@gmail.com>",
+]
 license = "MIT"
-keywords = ["nim", "python", "compiler", "import", "performance", "cython", "transpiler", "nimpy", "cython-alternative", "nim-source", "nim-compiler", "nimporter-library"]
-classifiers = ["Development Status :: 5 - Production/Stable", "Topic :: Software Development :: Libraries :: Python Modules", "Topic :: Utilities", "Intended Audience :: Developers", "Intended Audience :: End Users/Desktop", "Intended Audience :: Education", "Intended Audience :: Science/Research", "License :: OSI Approved :: MIT License", "Natural Language :: English", "Operating System :: OS Independent", "Programming Language :: Python :: 3", "Programming Language :: Python :: 3.7", "Programming Language :: Python :: 3.8", "Programming Language :: Python :: 3.9", "Programming Language :: Python :: 3.10", "Programming Language :: Python :: 3.11",]
+keywords = [
+    "nim",
+    "python",
+    "compiler",
+    "import",
+    "performance",
+    "cython",
+    "transpiler",
+    "nimpy",
+    "cython-alternative",
+    "nim-source",
+    "nim-compiler",
+    "nimporter-library",
+]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Topic :: Utilities",
+    "Intended Audience :: Developers",
+    "Intended Audience :: End Users/Desktop",
+    "Intended Audience :: Education",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: MIT License",
+    "Natural Language :: English",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+]
 homepage = "https://github.com/Pebaz/nimporter"
 repository = "https://github.com/Pebaz/nimporter"
 documentation = "https://pebaz.github.io/nimporter/index.html"
-maintainers = ["Pebaz <https://github.com/Pebaz>", "SekouDiaoNlp <diao.sekou.nlp@gmail.com>"]
-readme = "README.md"
-packages = [
-    { include = 'nimporter' },
-    { include = 'tests', format = 'sdist' },
+maintainers = [
+    "Pebaz <https://github.com/Pebaz>",
+    "SekouDiaoNlp <diao.sekou.nlp@gmail.com>",
 ]
+readme = "README.md"
+packages = [{ include = 'nimporter' }, { include = 'tests', format = 'sdist' }]
 include = [
     { path = 'README.md', format = 'sdist' },
     { path = 'LICENSE', format = 'sdist' },
@@ -27,18 +60,16 @@ include = [
     { path = '*.sh', format = 'sdist' },
     { path = '*.ps1', format = 'sdist' },
 ]
-exclude = [
-    { path = '*.md', format = 'wheel' },
-]
+exclude = [{ path = '*.md', format = 'wheel' }]
 
 [tool.poetry.scripts]
 nimporter = 'nimporter.cli:main'
 
 [tool.poetry.dependencies]
 python = "^3.7"
-py-cpuinfo = "^9.0.0"  # Auto-detect user architecture
-icecream = "^2.1.3"  # Instrumentation
-cookiecutter = "^2.1.1"  # Folder structure
+py-cpuinfo = "^9.0.0"   # Auto-detect user architecture
+icecream = "^2.1.3"     # Instrumentation
+cookiecutter = "^2.1.1" # Folder structure
 
 
 [tool.poetry.dev-dependencies]
@@ -60,5 +91,5 @@ files = [
     "nimporter/lib.py",
     "nimporter/nimporter.py",
     "nimporter/nexporter.py",
-    "nimporter/cli.py"
+    "nimporter/cli.py",
 ]
diff --git a/setup.py b/setup.py
index 36345d4..070c0bf 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 
 setup(
     name='nimporter',
-    version='2.0.0',
+    version='2.0.1',
     license='MIT',
     description='Compile Nim extensions for Python when imported!',
     long_description=io.open('README.md', encoding='utf-8').read(),