Ubuntu bionic has a too old git

[gagbo]

Output of :PackerSync and :PackerUpdate includes this for all my packages :

 ✗ Failed to update bakpakin/fennel.vim: {
  data = {
    data = {
      data = {
        exit_code = 129,
        output = {
          data = {
            stderr = { "error: unknown option `show-current'\nusage: git branch [<options>] [-r | -a] [--merged | --no-merged]\n   or: git branch [<options>] [-l] [-f] <branch-name> [<start-point>]\n   or: git branch [<options>] [-r] (-d | -D) <branch-name>...\n   or: git branch [<options>] (-m | -M) [<old-branch>] <new-branch>\n   or: git branch [<options>] (-c | -C) [<old-branch>] <new-branch>\n   or: git branch [<options>] [-r | -a] [--points-at]\n   or: git branch [<options>] [-r | -a] [--format]\n\nGeneric options\n    -v, --verbose         show hash and subject, give twice for upstream branch\n    -q, --quiet           suppress informational messages\n    -t, --track           set up tracking mode (see git-pull(1))\n    -u, --set-upstream-to <upstream>\n                          change the upstream info\n    --unset-upstream      Unset the upstream info\n    --color[=<when>]      use colored output\n    -r, --remotes         act on remote-tracking branches\n    --contains <commit>   print only branches that contain the commit\n    --no-contains <commit>\n                          print only branches that don't contain the commit\n    --abbrev[=<n>]        use <n> digits to display SHA-1s\n\nSpecific git-branch actions:\n    -a, --all             list both remote-tracking and local branches\n    -d, --delete          delete fully merged branch\n    -D                    delete branch (even if not merged)\n    -m, --move            move/rename a branch and its reflog\n    -M                    move/rename a branch, even if target exists\n    -c, --copy            copy a branch and its reflog\n    -C                    copy a branch, even if target exists\n    --list                list branch names\n    -l, --create-reflog   create the branch's reflog\n    --edit-description    edit the description for the branch\n    -f, --force           force creation, move/rename, deletion\n    --merged <commit>     print only branches that are merged\n    --no-merged <commit>  print only branches that are not merged\n    --column[=<style>]    list branches in columns\n    --sort <key>          field name to sort on\n    --points-at <object>  print only branches of the object\n    -i, --ignore-case     sorting and filtering are case insensitive\n    --format <format>     format to use for the output" },
            stdout = {}
          },
          err = {
            stderr = {},
            stdout = {}
          }
        },
        signal = 0
      },
      msg = "Error checking current branch for bakpakin/fennel.vim: fb50175 "
    },
    msg = "Error pulling updates for bakpakin/fennel.vim: "
  },
  msg = "Error checking updated commit for bakpakin/fennel.vim: fb50175"
}

From navigating the manual page it looks like --show-current is only for 2.23+ and I have 2.17 currently on this machine

[wbthomason]

Ah, nice find! That's frustrating; Bionic is a LTS release, right?

I'll need to look into alternatives for show-current, or at least way to detect git version.

Of course, if we end up switching over to something like @bfredl's potential libgit2, then maybe this ceases to be a problem?

[gagbo]

yeah Bionic is LTS, it's the codename for 18.04 and I think LTS are 5 year support ? So it would be maintained until 2023

[wbthomason]

@gagbo Could you please try git rev-parse --abbrev-ref HEAD in some git repo on your machine and let me know if it prints only your current branch?

[gagbo]

It does work well