Saving colorscheme to session file on exit

[j-krl]

Is there a way you could recommend that I save my current colorscheme to the session file before exiting vim? With regular old :mksession I can do it pretty easily with an autocmd that triggers on SessionWritePost where I write an extra line to the session file. This doesn't seem to work with vim-obsession.

I noticed there's an g:obsession_append variable in the plugin source, but I don't think it will work for something dynamic like the current colorscheme.

[ruuzia]

This seems to work.

vim.api.nvim_create_autocmd("User", {
    pattern = "ObsessionPre",
    callback = function()
        vim.g.obsession_append = {
            "colorscheme " .. vim.g.colors_name,
        }
    end,
})

Or equivalent in vimscript. Note that some colorscheme plugins come with several "themes" but set the same g:colors_name for all of them for whatever reason.