missing metadata for import of "..."

[x1unix]

When importing a new package in a Gno file, a following issue occurs:

This issue is often happening after importing ufmt package. Usually this happens if package info or its dependencies is incomplete.

This issue is a heisenbug and can be solved by restarting an LSP server

Here is an LSP log from neovim: lsp.log.zip

Demo

Screen.Recording.2025-01-23.at.00.54.13.mov

Potential Fixes

Here are potential causes:

Missing dependencies

Some Gno packages import Go standard library or symbols which doesn't exist.

To address this, you might need to supply stub packages to satisfy gopls.

Known missing packages which used by Gno stdlib

builtin
encoding/json
fmt
io/fs
os
reflect
unsafe

Some other internal bug

I had problems with gopls's package loader and sometimes introducing a little timeout inside package driver helps.