[defx] Invalid source_name:file on Defx

Problems summary

On latest version, when typing :Defx, I receive [defx] Invalid source_name:file.

Expected

I’d expect the defx file explorer to open.

Environment Information

• plugin version(SHA1): 9983f2c

• OS: Ubuntu 20.04.3 LTS

• neovim/Vim version: NVIM v0.6.0-dev+304-g924e8e4f2

• :checkhealth or :CheckHealth result(neovim only):

health#lsp#check
========================================================================
## Checking language server client configuration
  - INFO: LSP log level : WARN
  - INFO: Log path: /home/sroeca/.cache/nvim/lsp.log
  - INFO: Log size: 3 KB

health#nvim#check
========================================================================
## Configuration
  - OK: no issues found

## Performance
  - OK: Build type: RelWithDebInfo

## Remote Plugins
  - OK: Up to date

## terminal
  - INFO: key_backspace (kbs) terminfo entry: key_backspace=\177
  - INFO: key_dc (kdch1) terminfo entry: key_dc=\E[3~
  - INFO: $TERM_PROGRAM='tmux'
  - INFO: $COLORTERM='truecolor'

## tmux
  - OK: escape-time: 0
  - INFO: Checking stuff
  - OK: focus-events: on
  - INFO: $TERM: tmux-256color

health#provider#check
========================================================================
## Clipboard (optional)
  - OK: Clipboard tool found: xclip

## Python 2 provider (optional)
  - INFO: Disabled (g:loaded_python_provider=true).  This might be due to some previous error.
  - WARNING: No Python executable found that can `import neovim`. Using the first available executable for diagnostics.
  - ERROR: Python provider error:
    - ADVICE:
      - provider/pythonx: Could not load Python 2:
          /usr/bin/python2 does not have the "neovim" module. :help |provider-python|
          /usr/bin/python2.7 does not have the "neovim" module. :help |provider-python|
          python2.6 not found in search path or not executable.
          /home/sroeca/.asdf/shims/python is Python 3.9 and cannot provide Python 2.
  - INFO: Executable: Not found

## Python 3 provider (optional)
  - INFO: `g:python3_host_prog` is not set.  Searching for python3 in the environment.
  - INFO: Multiple python3 executables found.  Set `g:python3_host_prog` to avoid surprises.
  - INFO: Executable: /home/sroeca/.asdf/shims/python3
  - INFO: Other python executable: /usr/bin/python3
  - INFO: Python version: 3.9.6
  - INFO: pynvim version: 0.4.3
  - OK: Latest pynvim is installed.

## Python virtualenv
  - OK: no $VIRTUAL_ENV

## Ruby provider (optional)
  - INFO: Ruby: ruby 3.0.2p107 (2021-07-07 revision 0db68f0233) [x86_64-linux]
  - WARNING: `neovim-ruby-host` not found.
    - ADVICE:
      - Run `gem install neovim` to ensure the neovim RubyGem is installed.
      - Run `gem environment` to ensure the gem bin directory is in $PATH.
      - If you are using rvm/rbenv/chruby, try "rehashing".
      - See :help |g:ruby_host_prog| for non-standard gem installations.

## Node.js provider (optional)
  - INFO: Node.js: v16.6.0
  - INFO: Nvim node.js host: /home/sroeca/.asdf/installs/nodejs/16.6.0/.npm/lib/node_modules/neovim/bin/cli.js
  - OK: Latest "neovim" npm/yarn package is installed: 4.10.0

## Perl provider (optional)
  - ERROR: perl provider error:
    - ADVICE:
      - "Neovim::Ext" cpan module is not installed

health#treesitter#check
========================================================================
## Checking treesitter configuration
  - INFO: Runtime ABI version : 13
  - OK: Loaded parser for c: ABI version 13
  - OK: Loaded parser for bash: ABI version 13
  - OK: Loaded parser for bibtex: ABI version 13
  - OK: Loaded parser for c: ABI version 13
  - OK: Loaded parser for cpp: ABI version 13
  - OK: Loaded parser for css: ABI version 13
  - OK: Loaded parser for dockerfile: ABI version 13
  - OK: Loaded parser for gdscript: ABI version 13
  - OK: Loaded parser for go: ABI version 13
  - OK: Loaded parser for graphql: ABI version 13
  - OK: Loaded parser for hcl: ABI version 13
  - OK: Loaded parser for html: ABI version 13
  - OK: Loaded parser for java: ABI version 13
  - OK: Loaded parser for javascript: ABI version 13
  - OK: Loaded parser for jsdoc: ABI version 13
  - OK: Loaded parser for json: ABI version 13
  - OK: Loaded parser for jsonc: ABI version 13
  - OK: Loaded parser for julia: ABI version 13
  - OK: Loaded parser for latex: ABI version 13
  - OK: Loaded parser for ledger: ABI version 13
  - OK: Loaded parser for lua: ABI version 13
  - OK: Loaded parser for ocaml: ABI version 13
  - OK: Loaded parser for php: ABI version 13
  - OK: Loaded parser for python: ABI version 13
  - OK: Loaded parser for query: ABI version 13
  - OK: Loaded parser for regex: ABI version 13
  - OK: Loaded parser for rst: ABI version 13
  - OK: Loaded parser for ruby: ABI version 13
  - OK: Loaded parser for rust: ABI version 13
  - OK: Loaded parser for svelte: ABI version 13
  - OK: Loaded parser for toml: ABI version 13
  - OK: Loaded parser for tsx: ABI version 13
  - OK: Loaded parser for typescript: ABI version 13
  - OK: Loaded parser for vim: ABI version 13
  - OK: Loaded parser for yaml: ABI version 13

Provide a minimal init.vim/vimrc with less than 50 lines (Required!)

" Your minimal init.vim/vimrc

N/A. I cloned the repo into my Vim package directory and opened Neovim with nvim -u NORC

The reproduce ways from neovim/Vim starting (Required!)

1. Open nvim with nvim -u NORC
2. Type :Defx

Screen shot (if possible)

[pappasam]

This is as close as I’ve found: https://github.com/neovim/neovim/pull/15632

Current workaround: packadd defx and its related plugins in your vimrc. This adds them to your runtime path before your vimrc finishes.

[Shougo]

Fixed.