Steps to reproduce:

1. install old pari and pari-devel (version 2.11.4_1 which I have in my cache)

# xdowngrade /var/cache/xbps/pari{,-devel}-2.11.4_1.x86_64.xbps

2. Note that:

• pari-devel-2.11.4_1 depends on pari-2.11.4_1

$ xbps-query -S pari-devel | grep -P 'pkgver:|run_depends|\t'
pkgver: pari-devel-2.11.4_1
run_depends:
	pari-2.11.4_1

• pari-devel-2.13.1_1 depends on pari>=2.13.1_1

$ xbps-query -RS pari-devel | grep -P 'pkgver:|run_depends|\t'
pkgver: pari-devel-2.13.1_1
run_depends:
	pari>=2.13.1_1

3. Put pari on hold (currently installed version 2.11.4_1)

# xbps-pkgdb -m hold pari

4. Do an update:

# xbps-install -u

Name       Action    Version           New version            Download size
pari-devel update    2.11.4_1          2.13.1_1               - 

[...]

5. Now pari is at 2.11.4_1, but pari-devel is at 2.13.1_1:

$ xbps-query -s pari
[*] pari-2.11.4_1       Fast computations library in number theory
[*] pari-devel-2.13.1_1 Fast computations library in number theory - development files

This is inconsistent with pari-devel-2.13.1_1 depending on pari>=2.13.1_1.

Expected behaviour

That holding pari at 2.11.4_1 prevents upgrading pari-devel to 2.13.1_1, since that leads to an incosistent state.

I know I can hold pari-devel, but what if I forgot?

Ideally, it should ignore updating pari-devel, although an error is quite acceptable (because an error leads me to put pari-devel on hold, and then I'm happy and nothing has been broken).

Another, similar behaviour:

1. have only pari-2.11.4_1 installed and on hold
2. request install of pari-devel
3. xbps happily installs pari-devel-2.13.1_1 without upgrading pari-2.11.4_1

I would have expected an error warning me that pari-devel-2.13.1_1 cannot be installed.

Note in this case I cannot put pari-devel on hold beforehand so there's no workaround. OTOH, xbps has no recourse (since pari-devel-2.11.4_1 is not in the repo) so there would be no choice but issue an error.