Question about using the git version of a program

johnblood · March 14, 2020, 4:59pm

Hi,

I created a snap for a terminal program I like, mainly for my own use.

At the time I created the snap, the most recent release was made in 2015. The git version had some fixes in it that the old release didn’t, so I used the git version. Since the beginning of the year, there have been a couple of releases, but the version number on the snap has not changed. It still says 0+git.73b81d4.

I have two questions: a) What does 0+git.73b81d4 refer to? b) How can I tell if the snap is grabbing the most recent version of the program?

Here is the link to my snap yaml: https://github.com/JohnBlood/dosage/blob/master/snap/snapcraft.yaml .

Thanks

Saviq · March 15, 2020, 11:14am

Hi @johnblood, have a look at the manpage for git describe, that’s where the string comes from.

Simplifying a lot, it is <most recent tag>[+git.[<commits since tag>.]<commit>].

The actual code generating it:

github.com

snapcore/snapcraft/blob/9f89aef3beb32cedcbe9d563dbe2a407552503fc/snapcraft/internal/sources/_git.py#L46


@classmethod
def check_command_installed(cls) -> bool:
    """Check if git is installed."""
    try:
        cls.version()
    except FileNotFoundError:
        return False
    return True
@classmethod
def generate_version(cls, *, source_dir=None):
    """Return the latest git tag from PWD or defined source_dir.
    The output depends on the use of annotated tags and will return
    something like: '2.28+git.10.abcdef' where '2.28 is the
    tag, '+git' indicates there are commits ahead of the tag, in
    this case it is '10' and the latest commit hash begins with
    'abcdef'. If there are no tags or the revision cannot be
    determined, this will return 0 as the tag and only the commit
    hash of the latest commit.