Cannot use, install or uninstall `db_connector` package
In devel, the command `nimble install db_connector` gives:
```
Downloading https://github.com/nim-lang/db_connector using git
   Warning: The package has no tagged releases, downloading HEAD instead.
  Verifying dependencies for db_connector@0.1.0
 Installing db_connector@0.1.0
  Warning:  A package "db_connector@0.1.0" with checksum "05c335ec678614b973d8a80651971e0719045d14" already exists the the cache.
```

and `nimble remove db_connector`
```
    Looking for db_connector (any version)
   Checking reverse dependencies
  Warning:  Cannot uninstall db_connector (0.1.0) because
        ... lowdb-0.2.0-dad3744a194c9087e41e599923b639d9f19b3b3d
        ... depends on it
       Tip: 1 messages have been suppressed, use --verbose to show them.
nimble.nim(1204)         uninstall

    Error:  Failed uninstall - no packages to delete
```

And I cannot import any DB lib:
```nim
import std/db_sqlite
```
error:
```
/path/to/main.nim(1, 11) Error: cannot open file: std/db_sqlite
```

I tried to rebuild the latest devel with `choosenim update devel --latest` but no success

---
Now I tried to clone [db_connector](https://github.com/nim-lang/db_connector) into `~/.nimble/pkgs/`, renamed to `db_connector-0.1.0` and moved src files to lib root dir, but no success...

For the others packages, the installation, removal and import works normally...