RFE: support directory-based dependencies

[abompard]

I'm using Poetry as a dependencies manager. If one of my dependencies is directory-based, micropipenv stops with the message:

micropipenv supports Git VCS, got directory instead

I think it's a common pattern for project that have multiple components to have directory-based dependencies from a subproject to another. My pyproject.toml file has:

[tool.poetry.dependencies]
myproject = {path = "./myproject"}

I propose the following change:

@@ -703,11 +703,13 @@
             requirement["markers"] = entry["marker"]
 
         if "source" in entry:
-            if entry["source"]["type"] != "git":
-                raise NotSupportedError("micropipenv supports Git VCS, got {} instead".format(entry["source"]["type"]))
-
-            requirement["git"] = entry["source"]["url"]
-            requirement["ref"] = entry["source"]["reference"]
+            if entry["source"]["type"] == "git":
+                requirement["git"] = entry["source"]["url"]
+                requirement["ref"] = entry["source"]["reference"]
+            elif entry["source"]["type"] == "directory":
+                requirement["path"] = entry["source"]["url"]
+            else:
+                raise NotSupportedError("micropipenv supports Git VCS or directories, got {} instead".format(entry["source"]["type"]))
 
         # Poetry does not store information about extras in poetry.lock
         # (directly).  It stores extras used for direct dependencies in

I'm totally willing to send a proper PR with unit tests, but first I wanted to check whether you'd be interested in this feature, and if you think I'm on the right track.

Thanks.

[frenzymadness]

In my opinion, it makes sense and it seems to work fine. The pipfile.lock produced by your implementation seems to be valid and micropipenv is able to install it. @fridex do you know about any issues or blockers?

[abompard]

Cool, thanks. I have created a PR with the change: #204

[fridex]

+1 from my side. @abompard thanks for the idea and contribution 👍🏻

[codificat]

/kind feature