Matching distro against a context with distro name only about fmf HOT 7 CLOSED

There are no special dimensions, we have just added special operand which enforces same minor version.

One would expect following, right?

>>> fmf.context.Context(distro='fedora-33').matches('distro == fedora')
True

I guess we will not break anything if in comparison we require both sides to have non-empty version parts so
foo > foo-1 as well as foo > bar is CannotDecide but foo-1 > foo-0.8

from fmf.

How about foo >= foo-1 ? Since foo == foo-1 is True we need to have foo >= foo-1 True as well, IMHO

from fmf.

What about requiring context (left side) to have version defined if rule (right side) uses it?

from fmf.

I think I need to adjust how comparing works (again) - in addition to have version part filled, ContextValue will need to have same name parts.

Because now you can't really compare module streams.
This matches because of string compare between module names

>>> Context("module = py:5.28").matches("module > perl:5.28")                                                                                      
True

If you use minor mode comparison it is skips compare as one expect but you loose ability to version compare streams between major (here perl:6 to perl:5) which you are likely to need...

>>> Context("module = py:5.28").matches("module ~> perl:5.28")                                                                                      
CannotDecide:
>>> Context("module = perl:6.28").matches("module ~> perl:5.28")
CannotDecide:

So the proposal is to allow comparing only if both sides have same name, so following will be possible

>>> Context("module = perl:6.28").matches("module > perl:5.28")
True
>>> Context("module = py:5").matches("module > perl:5.28")
CannotDecide:
>>> Context("module = py:5").matches("module >= perl:5.28")
CannotDecide:

from fmf.

From IRC:
rhel-7 == rhel-7.3 == rhel-7.3.eus thus rhel-7 >= rhel-7.3 >= rhel-7.3.eus
But if you need strict check for minor version you need to use <, ~<, >, ~> e.g.
rhel-7 > rhel-7.3 ---> CannotDecide

from fmf.

I would argue against

fedora >= centos | True (string comparison)

I reckon there is no way to tell which one actually is higher / newer / whatever. Comparing different distros does not make much sense. The resolution in this case should be: CannotDecide

from fmf.

fedora >= centos | True (string comparison)
I reckon, there is no way to tell which one actually is higher / newer / whatever. Comparing different distros does not make much sence. The resolution in this case should be: CannotDecide

Yes, it will be CannotDecide

from fmf.