We no longer rely on git tags and git describe output, since it's
hard to reliably select the correct tag eg for minor releases.
We might use them again in future for dev builds, but it requires
adding git describe --match support to githash. For now,
* Program name, OS and architecture are always shown.
* The package version is always shown.
* If there is git info at build time, the latest commit hash and commit date are shown.
Example outputs:
A homebrew binary, not built in git repo: hledger-ui 1.24, mac-aarch64
A CI release build, built in git repo: hledger 1.24.1-g455b35293-20211210, mac-x86_64
API changes:
* new type synonyms ProgramName, PackageVersion, VersionString
* versionStringForProgname -> versionString with extra argument
* versionStringFor -> versionStringWith with extra argument
(SourcePos, SourcePos).
This has been marked for possible removal for a while. We are keeping
strictly more information. Possible edge cases arise with Timeclock and
CsvReader, but I think these are covered.
The particular motivation for getting rid of this is that
GenericSourcePos is creating some awkward import considerations for
little gain. Removing this enables some flattening of the module
dependency tree.
to Hledger.Cli.
Since the git hash changes whenever any file in the repository changes,
this means Hledger.Cli.Version needs to be recompiled all the time.
Since it is at the bottom of the module hierarchy, this means that the
whole hledger package needs to be recompiled. We instead move the
TemplateHaskell splice to one of the top modules, so much less needs to
be recompiled.
Note: Ghc seems to be able to get out of most of the recompiling a lot
of the time (due to caching?), but this makes things more reliable.
