version from speicified file

pdm/__init__.py

-__version__ = "0.1.0"
+__version__ = "0.1.1-dev"

pdm/builders/base.py

@@ -326,7 +326,7 @@ class Builder:
 
         return content
 
-    def ensure_setup_py(self) -> None:
+    def ensure_setup_py(self, clean: bool = True) -> None:
         """Ensures the requirement has a setup.py ready."""
         # XXX: Currently only handle PDM project, and do nothing if not.
 
@@ -348,4 +348,5 @@ class Builder:
         def cleanup():
             os.unlink(setup_py_path)
 
-        atexit.register(cleanup)
+        if clean:
+            atexit.register(cleanup)

pdm/builders/sdist.py

@@ -3,6 +3,8 @@ import tarfile
 import tempfile
 from copy import copy
 
+from pkg_resources import to_filename, safe_version
+
 from pdm.builders.base import Builder
 from pdm.context import context
 
@@ -50,14 +52,15 @@ class SdistBuilder(Builder):
             os.makedirs(build_dir, exist_ok=True)
 
         context.io.echo("- Building {}...".format(context.io.cyan("sdist")))
+        version = to_filename(safe_version(self.meta.version))
 
         target = os.path.join(
-            build_dir, "{}-{}.tar.gz".format(self.meta.project_name, self.meta.version)
+            build_dir, "{}-{}.tar.gz".format(self.meta.project_name, version)
         )
         tar = tarfile.open(target, mode="w:gz", format=tarfile.PAX_FORMAT)
 
         try:
-            tar_dir = "{}-{}".format(self.meta.project_name, self.meta.version)
+            tar_dir = "{}-{}".format(self.meta.project_name, version)
 
             files_to_add = self.find_files_to_add(True)
 

pdm/project/meta.py

@@ -43,7 +43,18 @@ class PackageMeta:
         self.project = project
 
     name = MetaField("name")
-    version = MetaField("version")
+
+    def _get_version(self, value):
+        if isinstance(value, str):
+            return value
+        version_source = value.get("from")
+        with open(version_source, encoding="utf-8") as fp:
+            version = re.findall(
+                r"^__version__\s*=\s*[\"'](.+?)[\"']\s*$", fp.read(), re.M
+            )[0]
+        return version
+
+    version = MetaField("version", _get_version)
     homepage = MetaField("homepage")
     license = MetaField("license")
 

pyproject.toml

 [tool.pdm]
 name = "pdm"
-version = "0.1.0"
+version = {from = "pdm/__init__.py"}
 description = "Python Development Master"
 author = "frostming <mianghong@gmail.com>"
 license = "MIT"