nvim: stop using nix for nvim

I just wanna work, I don't wanna nix

.config/nvim/lua/winbar.lua

@@ -0,0 +1,36 @@
+local M = {}
+
+local api = vim.api
+local fn = vim.fn
+
+api.nvim_set_hl(0, "WinBar", { fg = "#dedede" })
+api.nvim_set_hl(0, "WinBarPath", { bg = "#dedede" })
+api.nvim_set_hl(0, "WinBarModified", { bg = "#dedede", bold = true })
+
+function M.eval()
+    local buffer = api.nvim_win_get_buf(0)
+    local bufname = fn.bufname(buffer)
+    local modified = ""
+    local readonly = ""
+
+    if vim.bo[buffer].readonly then
+        readonly = "[RO] "
+    end
+
+    if vim.bo[buffer].modified then
+        modified = "[+] "
+    end
+
+    bufname = fn.fnamemodify(bufname, ":p:~")
+
+    return "%="
+        .. "%#WinBarModified#"
+        .. readonly
+        .. modified
+        .. "%*"
+        .. "%#WinBarPath#"
+        .. bufname
+        .. "%*"
+end
+
+return M