Add custom statusline in vim

flake.lock

@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1612396114,
-        "narHash": "sha256-W9B49pT2/Zzjd5GsGmjxCHcWdmBDTUVKdLrocGxA/Sc=",
+        "lastModified": 1612561117,
+        "narHash": "sha256-UEB+5KCINGyaAfkgqWeUhUwyBxTrlTLO+FjbYCG4exk=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "3f2f7f8efa57cb820d947b07a5a513764a45b462",
+        "rev": "d4202875831a2d1b9dd3002d89b8c794af9e5a43",
         "type": "github"
       },
       "original": {

home/init.vim

@@ -7,7 +7,6 @@
  set hlsearch
  set ignorecase
  set incsearch
- set laststatus=2
  set mouse=a
  set nocompatible
  set noswapfile
@@ -21,6 +20,31 @@
  set tabstop=2
  set wildmenu
 
+
+" Custom statusline
+function! GitBranch()
+  return system("git rev-parse --abbrev-ref HEAD 2>/dev/null | tr -d '\n'")
+endfunction
+
+function! StatuslineGit()
+  let l:branchname = GitBranch()
+  return strlen(l:branchname) > 0?'  '.l:branchname.' ':''
+endfunction
+
+set statusline=
+set statusline+=%#PmenuSel#
+set statusline+=%{StatuslineGit()}
+set statusline+=%#LineNr#
+set statusline+=\ %f
+set statusline+=%m
+set statusline+=%=
+set statusline+=%#CursorColumn#
+set statusline+=\ %y
+set statusline+=\ %{&fileencoding?&fileencoding:&encoding}
+set statusline+=\[%{&fileformat}\]
+set statusline+=\ %p%%
+set statusline+=\ %l:%c
+
  " Remember line number
  au BufReadPost * if line("'\"") > 0 && line("'\"") <= line("$") | exe "normal! g`\"" | endif