Hi Everyone, I’ve been working through Programming Phoenix, and the sample project “Rumbl”. At one point, we’re asked to create a migration with the command mix ecto.gen.migration add_category_id_to_video. When I do this, I get the error ** (File.Error) could not remove file "...rumbl/_build/dev…

[image] Aurus7: I’m on Windows 10, by the way. You are not running with privileges that allow symlinking, so Phoenix has to copy the priv directory instead of link it. However with it being copied creates race conditions. Assuming you are running recent versions of Phoenix/Elixir you should…

Hi. Also new to Phoenix. Maybe there’s something related to Brunch (node) running as Administrator. I’m not much sure on this but maybe when building (also copies priv folder to _build folder), it can delete because is not the owner. Not totally sure if this is the issue, but it may be a Node relat…

Thanks for the detailed explanation. Running the shell as Administrator fixed it for the reasons you mentioned.

[image] KokoAleksander: Hi. Also new to Phoenix. Maybe there’s something related to Brunch (node) running as Administrator. I’m not much sure on this but maybe when building (also copies priv folder to _build folder), it can delete because is not the owner. Nope, not brunch or node or even th…

Love what NTFS still does. I recall some weird stuff when was developing PHP + Composer on Windows. When wanted to delete the vendor folder, in some cases there were many files nested in some cases with long names, and NTFS just failed on those cases.

I can confirm that deleting the _build/*/priv folder manually does solve the problem. Thanks @OvermindDL1 !

I have also encountered this problem with Phoenix Framework ‘Hello’ demo application on Windows. In my case, the symlink ‘../priv’ tends to be created successfully by Phoenix (over and over again as the web page is refreshed), so deleting it manually won’t help, unless one is fine with repeatedly ma…

Mix ecto.gen.migration "could not remove file" error

Questions & Help Questions

OvermindDL1 January 31, 2017, 6:12pm 5

Nope, not brunch or node or even the BEAM, just how Windows works with lots of file changes very fast.

Awesome, glad to help.