add pre-release option to venv-add, closes #6

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "pycage"
-version = "0.2.4dev1"
+version = "0.2.4"
 description = "tool to handle standalone Python installations from the CLI"
 authors = [
     {name = "Florian Förster", email = "f.foerster@d-opt.com"},
@@ -78,7 +78,7 @@ directory = "reports/coverage"
 
 
 [tool.bumpversion]
-current_version = "0.2.4dev1"
+current_version = "0.2.4"
 parse = """(?x)
     (?P<major>0|[1-9]\\d*)\\.
     (?P<minor>0|[1-9]\\d*)\\.

src/pycage/venv.py

@@ -63,6 +63,7 @@ def add_pkg(
     package: str,
     index: str | None = None,
     extra_index: str | None = None,
+    include_prerelease: bool = False,
 ) -> None:
     cmd: list[str] = [
         str(interpreter),
@@ -79,11 +80,22 @@ def add_pkg(
     if extra_index is not None:
         add_opts = ["--extra-index-url", extra_index]
         cmd.extend(add_opts)
+    if include_prerelease:
+        add_opts = ["--pre"]
+        cmd.extend(add_opts)
 
     subprocess.run(cmd)
 
 
 @click.command(help="install packages directly into the virtual environment")
+@click.option(
+    "-p",
+    "--pre",
+    is_flag=True,
+    default=False,
+    show_default=True,
+    help=("install pre-release versions"),
+)
 @click.option(
     "-e", "--extra-index", default=None, help="extra index to lookup packages at by pip"
 )
@@ -93,6 +105,7 @@ def add(
     package: str,
     index: str | None,
     extra_index: str | None,
+    pre: bool,
 ) -> None:
     try:
         pth_intp = get_interpreter()
@@ -105,6 +118,7 @@ def add(
         package=package,
         index=index,
         extra_index=extra_index,
+        include_prerelease=pre,
     )