nix-config/modules/home/vim/plugin/settings/oil.lua

local oil = require("oil")
local wk = require("which-key")

local detail = false

oil.setup({
    view_options = {
        -- Show files and directories that start with "." by default
        show_hidden = true,
        -- But never '..'
        is_always_hidden = function(name, bufnr)
            return name == ".."
        end,
    },
    keymaps = {
        ["gd"] = {
            desc = "Toggle file detail view",
            callback = function()
                detail = not detail
                if detail then
                    oil.set_columns({ "icon", "permissions", "size", "mtime" })
                else
                    oil.set_columns({ "icon" })
                end
            end,
        },
    },
})

local keys = {
    ["-"] = { oil.open, "Open parent directory" },
}

wk.register(keys)