Diffview Doesn't Load correctly with Packer

[teto]

Prerequsities

• The "Troubleshooting" section of the README did not help
• I've installed the required dependencies
• I'm on the latest version of the plugin

Bug Description

In lua/gitlab/reviewer/diffview.lua there is a local diffview_lib = require("diffview.lib") line that triggers

|| ...ck/home-manager/start/diffview.nvim/lua/diffview/lib.lua:12: attempt to index global 'DiffviewGlobal' (a nil value)
|| # stacktrace:
||   - ~/.local/share/nvim/site/pack/home-manager/start/diffview.nvim/lua/diffview/lib.lua:12
||   - /gitlab.nvim/lua/gitlab/reviewer/diffview.lua:5
||   - /gitlab.nvim/lua/gitlab/reviewer/init.lua:2
||   - /gitlab.nvim/lua/gitlab/init.lua:5
||   - ~/.config/nvim/lua/lazyplugins/git.lua:10 _in_ **config**
||   - ~/.config/nvim/lua/init-manual.lua:60
||   - ~/home/config/nvim/init.lua:12

if you have https://github.com/sindrets/diffview.nvim installed as well aka require("gitlab.diffview.lib") instead.

everything included should be scoped by the plugin name.

Reproduction Steps

install https://github.com/sindrets/diffview.nvim and gitlab.nvim

[teto]

arf I had not realized diffview was a new dependency so seems like the problem might be in initialization order ? diffview must be initialized before gitlab.nvim

[harrisoncramer]

Hey Teto, thanks for reporting this.

Yes, this is why for Packer and Lazy diffview is listed in the dependencies or requires section of the plugin configuration. Are you still stuck or did you get this resolved?

[teto]

I think it's ok. Depending on how I launch neovim I see some errors like an highlight missing for gitlab.nvim but it's not a big problem. Let's close

[thomasgrz]

Thank you so much for this plugin!

Just FWIW, I'm running into the same error:

packer.nvim: Error running config for gitlab.nvim: ...ite/pack/packer/start/diffview.nvim/lua/diffview/lib.lua:12: attempt to index global 'DiffviewGlobal' (a
 nil value)

I've actually tried deleting the previous installation of diffview and re-installing with it just as a dependency of gitlab.nvim.

Here's what the config looks like in my packer.lua file:

    use {
        'harrisoncramer/gitlab.nvim',
        requires = {
            "MunifTanjim/nui.nvim",
            "nvim-lua/plenary.nvim",
            "sindrets/diffview.nvim",
            "stevearc/dressing.nvim", -- Recommended but not required. Better UI for pickers.
            "nvim-tree/nvim-web-devicons", -- Recommended but not required. Icons in discussion tree.
        },
        run = function() require("gitlab.server").build(true) end,
        config = function()
            require("gitlab").setup()
        end,
    }

I thought I could ignore it, but I also noticed that when I try to install with :PackerSync I get the following error (which seems related):

packer.nvim: Error running config for gitlab.nvm: [string "..."] loop or previous loading module 'gitlab'

Any idea what I could be doing incorrectly?

[harrisoncramer]

This looks specifically like an issue with Packer, I'm not a user but would appreciate any help from the community...

Looks like diffview expects there to be a global variable DiffviewGlobal available when it's run, however for some reason it's not getting picked up. You can replicate this by using Packer's minimal configuration with this plugin.