Python infrastructure as it exists today is not capable reliably of single-sourcing a package version from a parent directory. The authors of pip are working to correct this, but as of today this is not possible to my knowledge.
The problem is that when using pip to build and install a python package, it copies files over to a temporary directory and performs its build there. This loses access to any information in the parent directory, including git itself. Further, Python versions have a standard (PEP 440) that may or may not follow QEMU's versioning. In general, it does; but naturally QEMU does not follow PEP 440. To avoid any automatically-generated conflict, a manual version file is preferred. I am proposing: - Python tooling follows the QEMU version, indirectly, but with a major version of 0 to indicate that the API is not expected to be stable. This would mean version 0.5.2.0, 0.5.1.1, 0.5.3.0, etc. - In the event that a Python package needs to be updated independently of the QEMU version, a pre-release alpha version should be preferred, but *only* after inclusion to the qemu development or stable branches. e.g. 0.5.2.0a1, 0.5.2.0a2, and so on should be preferred prior to 5.2.0's release. - The Python core tooling makes absolutely no version compatibility checks or constraints. It *may* work with releases of QEMU from the past or future, but it is not required to. i.e., "qemu.machine" will always remain in lock-step with QEMU. - We reserve the right to split the qemu package into independently versioned subpackages at a later date. This might allow for us to begin versioning QMP independently from QEMU at a later date, if we so choose. Implement this versioning scheme by adding a VERSION file and setting it to 0.5.2.0a1. Signed-off-by: John Snow <js...@redhat.com> --- python/VERSION | 1 + python/setup.cfg | 1 + 2 files changed, 2 insertions(+) create mode 100644 python/VERSION diff --git a/python/VERSION b/python/VERSION new file mode 100644 index 0000000000..ceef7e1ad0 --- /dev/null +++ b/python/VERSION @@ -0,0 +1 @@ +0.5.2.0a1 diff --git a/python/setup.cfg b/python/setup.cfg index 12b99a796e..260f7f4e94 100755 --- a/python/setup.cfg +++ b/python/setup.cfg @@ -1,5 +1,6 @@ [metadata] name = qemu +version = file:VERSION maintainer = QEMU Developer Team maintainer_email = qemu-devel@nongnu.org url = https://www.qemu.org/ -- 2.26.2
