update mkabs function, version bump

Author: nsheff

docs/changelog.md

@@ -2,11 +2,17 @@
 
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html) and [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) format. 
 
+## [0.8.0] - Unreleased
+### Changed
+- Expanded `mkabs` function to handle more cases
+- Allow `is_url` to work on Path objects
+
 ## [0.7.0] - 2024-01-02
 
 ### Added
 - Experimental support for three-locking.
 
+
 ## [0.6.3] - 2023-08-08
 ### Fixed 
 - Incorrect read of registry path.  [Issue 35](https://github.com/pepkit/ubiquerg/issues/35)

ubiquerg/_version.py

@@ -1 +1 @@
-__version__ = "0.7.0"
+__version__ = "0.8.0"

ubiquerg/paths.py

@@ -81,10 +81,10 @@ def parse_registry_path(
     return parsed_identifier
 
 
-def mkabs(path, reldir=None):
+def mkabs(path:str, reldir:str =None) -> str:
     """
     Makes sure a path is absolute; if not already absolute, it's made absolute
-    relative to a given directory. Also expands ~ and environment variables for
+    relative to a given directory (or file). Also expands ~ and environment variables for
     kicks.
 
     :param str path: Path to make absolute
@@ -109,4 +109,7 @@ def xpand(path):
     if not reldir:
         return os.path.abspath(xpand(path))
 
-    return os.path.join(xpand(reldir), xpand(path))
+    if os.path.isdir(reldir):
+        return os.path.join(xpand(reldir), xpand(path))
+    else:
+        return os.path.join(xpand(os.path.dirname(reldir)), xpand(path))