backup nixos config, nvim: add gitlink-vim

add also a script to copy the nixos config files to the repo

init.vim

@@ -35,6 +35,8 @@ Plug 'luochen1990/rainbow'
 
 " git
 Plug 'tpope/vim-fugitive'
+" gitlink
+Plug 'mazubieta/gitlink-vim'
 
 " go
 Plug 'fatih/vim-go' " Amazing combination of features.
@@ -227,6 +229,15 @@ syntax enable
 " viewer method:
 let g:vimtex_view_method = 'zathura'
 
+"" gitlink
+function! CopyGitLink(...) range
+  redir @+
+  silent echo gitlink#GitLink(get(a:, 1, 0))
+  redir END
+endfunction
+nmap <leader>gl :call CopyGitLink()<CR>
+vmap <leader>gl :call CopyGitLink(1)<CR>
+
 "" sage syntax
 augroup filetypedetect
   au! BufRead,BufNewFile *.sage,*.spyx,*.pyx setfiletype python