Split single module file out into directory module

tox_poetry_installer/constants.py

@@ -0,0 +1,26 @@
+"""Static constants for reference
+
+Rule of thumb: if it's an arbitrary value that will never be changed at runtime, it should go
+in this module.
+
+All constants should be type hinted.
+"""
+from typing import Tuple
+
+from tox_poetry_installer import __about__
+
+
+# Valid PEP508 version delimiters. These are used to test whether a given string (specifically a
+# dependency name) is just a package name or also includes a version identifier.
+PEP508_VERSION_DELIMITERS: Tuple[str, ...] = ("~=", "==", "!=", ">", "<")
+
+# Prefix all reporter messages should include to indicate that they came from this module in the
+# console output.
+REPORTER_PREFIX = f"[{__about__.__title__}]:"
+
+# Suffix that indicates an env dependency should be treated as a locked dependency and thus be
+# installed from the lockfile. Will be automatically stripped off of a dependency name during
+# sorting so that the resulting string is just the valid package name. This becomes optional when
+# the "require_locked_deps" option is true for an environment; in that case a bare dependency like
+# 'foo' is treated the same as an explicitly locked dependency like 'foo@poetry'
+MAGIC_SUFFIX_MARKER = "@poetry"