Non-VCS editable installs don’t freeze to editable requirements

[mforkel]

• Pip version: 9.0.1
• Python version: 2.7.14
• Operating system: Ubuntu 17.10

Description:

I'm using local projects, i.e. non-VCS "editable" installs, in virtual environments during development. pip freeze translates them into requirements like
<name>==<vers>
instead of
-e <path>
This makes it hard to re-make the virtual environment based on the requirements recorded by pip freeze.

A naive fix would be

--- pip/__init__.py.orig	2018-02-17 11:34:52.767000000 +0100
+++ pip/__init__.py	2018-02-17 11:29:44.659000000 +0100
@@ -271,6 +271,13 @@
                 )
                 req = dist.as_requirement()
                 editable = False
+        elif dist_is_editable(dist) and not vcs.get_backend_name(location):
+            editable = True
+            req = location
+            comments.append(
+                '# Using local project as editable install to satisfy requirement'
+            )
+        else:
             editable = False
             req = dist.as_requirement()
             specs = req.specs

Why are local projects seemingly not supported in pip freeze?

May be my question on Stack Overflow regarding this issue helps to explain my intention.

[mforkel]

In pip 10.0.1, the patch would be

--- pip/_internal/operations/freeze.py.orig     2018-05-19 16:03:17.741227000 +0200
+++ pip/_internal/operations/freeze.py  2018-05-19 20:16:59.323208417 +0200
@@ -190,6 +190,12 @@
                 )
                 req = dist.as_requirement()
                 editable = False
+        elif dist_is_editable(dist) and not vcs.get_backend_name(location):
+            editable = True
+            req = location
+            comments.append(
+                '# Using local project as editable install to satisfy requirement'
+            )
         else:
             editable = False
             req = dist.as_requirement()

[pradyunsg]

Seems fine to me.

[pradyunsg]

Feel free to open up a PR for this.

[piotr-dobrogost]

Somehow related is issue #4300 – -e install uses remote Git repo instead of local files

[pradyunsg]

Pushing this down the road to the next release since I don't think this'd happen in time for 18.0.

[pradyunsg]

I've labelled this issue as an "deferred till PR".

This label is essentially for indicating that further discussion related to this issue should be deferred until someone comes around to make a PR. This does not mean that the said PR would be accepted - it has not been determined whether this is a useful change to pip and that decision has been deferred until the PR is made.

[cjerdonek]

Note: this was also previously filed as issue #4286. But there is more discussion happening in this issue.

[cjerdonek]

I assigned myself to this issue and started working on it. There will be a couple simple refactoring PR's to start out with, the first of which is here: #5818. Prompt reviews welcome!

[cjerdonek]

I posted PR #5905 to address this.

[cjerdonek]

Addressed by PR #5905 in 3803ce3.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.