Universal Blue•3y ago

thanks for this, it was the solution I needed that was hidden in plain sight. 😄

thanks for this, it was the solution I needed that was hidden in plain sight.

Jj0rge thanks for this, it was the solution I needed that was hidden in plain sight. 😄

dreamyuki•6/1/23, 9:29 PM

Np
I remember something about ld with Nvidia image

Ddreamyuki # alternatives cannot create symlinks on its own during a container build RUN ln...

bsherman•6/1/23, 9:54 PM

and @j0rge
I think there is a better, generic solution for this since the lack of alternatives breaks many RPM installs, not just ldld...

before doing an rpm-ostree installrpm-ostree install in ContainerfileContainerfile run

mkdir -p /var/lib/alternativesmkdir -p /var/lib/alternatives

Example where i removed the manual symlink of ldld and used this instead:
https://github.com/ublue-os/akmods/blob/main/build-prep.sh#L17

j0rgeOP•6/1/23, 9:54 PM

wait, is this it?

Jj0rge wait, is this it?

bsherman•6/1/23, 9:55 PM

this allows successful install of any RPM with "post-install" operations that depend on alternatives, yah

j0rgeOP•6/1/23, 9:55 PM

I wonder if this is worth investigating project-wide? like in -main?

bsherman•6/1/23, 9:55 PM

i even suggested this on an upstream Fedora issue somewhere

j0rgeOP•6/1/23, 9:56 PM

what were the downsides?

Jj0rge I wonder if this is worth investigating project-wide? like in -main?

bsherman•6/1/23, 9:58 PM

yes, we should probably use it in our builds...

the downside is ostree container commitostree container commit doesn't like stuff in

/var

/var

so you have to clean it before doing the container commit... but we do that anyway...

so if you just want builds and RPM installs to work, the above is all you need...

but you CAN go a step further, copy the contents of /var/lib/alternatives out, ostree container commit, and then copy them back to /var/lib/alternatives if you want to try to preserve that stuff I do the latter in my image... but it's not crucial just nice to have the extra info IMHO

bsherman•6/1/23, 9:58 PM

it IS a hack, but it's required to install somethings, like the netcat RPM, it simply breaks without it

j0rgeOP•6/1/23, 9:59 PM

I think copying back and forth is a bit janky, but just creating the directory, I feel like ugly but working is better, especially since like, stuff like rust doesn't work otherwise.

j0rgeOP•6/1/23, 9:59 PM

and since it's an image when we clean it up later no fuss, no muss.

bsherman•6/1/23, 10:00 PM

This is my upstream issue: https://github.com/fedora-silverblue/issue-tracker/issues/430

Jj0rge there's no fixing this in a containerfile is there?

akdev•6/1/23, 10:00 PM

Create the link inside the containerfile and it should work

akdev•6/1/23, 10:00 PM

But you may need to remove the link

j0rgeOP•6/1/23, 10:00 PM

I have to drop by car off for service tonight but I'm down to work on this later if you want

Jj0rge I think copying back and forth is a bit janky, but just creating the directory, ...

bsherman•6/1/23, 10:00 PM

i'm fine with that. the main goal is to cleanly do installs, not preserve the alternatives data

Aakdev Create the link inside the containerfile and it should work

j0rgeOP•6/1/23, 10:00 PM

yeah I just did it in an sh file like how nvidia did it

j0rgeOP•6/1/23, 10:01 PM

but if we can skip this whole thing entirely by making an empty dir .... (showerthinking)

akdev•6/1/23, 10:01 PM

mkdir /etc/alternatives may work

bsherman•6/1/23, 10:02 PM

i'm nursing a headache, just got up from a nap, and not validating my statements, but i'm pretty confident (hence my link from an issue posted a few months ago)

akdev•6/1/23, 10:02 PM

Actually there’s probably no harm in doing that

akdev•6/1/23, 10:02 PM

before ostree would fail if there was data in /etc

akdev•6/1/23, 10:02 PM

But now it will just clean up

Aakdev mkdir /etc/alternatives may work

bsherman•6/1/23, 10:02 PM

this also doesn't hurt anythign, but it is not an alternative to mkdir /var/lib/alternatives ...

akdev•6/1/23, 10:03 PM

No, it is a workaround

Bbsherman i'm nursing a headache, just got up from a nap, and not validating my statements...

j0rgeOP•6/1/23, 10:03 PM

alright let's table it for later then, I have no problems making tonight video game night, heh

Bbsherman yes, we should probably use it in our builds... the downside is `ostree contain...

akdev•6/1/23, 10:04 PM

ostree container commit now cleans up /var iirc

akdev•6/1/23, 10:05 PM

unless I am making stuff up which is possible

bsherman•6/1/23, 10:05 PM

right, but i mean, I don't think mkdir /etc/alternatives is required, but mkdir /var/lib/alternatives is...

at least, i think

happy to be proven wrong with a better solution... i' just know it's been working

here's where i do it in my personal image (the "cleanup" bit, which assumes the mkdir -p /var/lib/alternativesmkdir -p /var/lib/alternatives above)

https://github.com/bsherman/ublue-custom/blob/main/Containerfile#L36-L39

Jj0rge alright let's table it for later then, I have no problems making tonight video g...

bsherman•6/1/23, 10:06 PM

I can't work on ublue tonight, need to do $DAYJOB, prep for some family stuff this weekend, and hopefully I'll get a few minutes to game myself

j0rgeOP•6/1/23, 10:06 PM

we could start small with just the one and see what we can get away with. vegeta

akdev•6/1/23, 10:06 PM

In theory I think we could build a container like:

buildah build -v /somedir:/var/lib/alternatives

Jj0rge we could start small with just the one and see what we can get away with. <:vege...

bsherman•6/1/23, 10:06 PM

well, i already do it in ublue-os/akmodsublue-os/akmods

Bbsherman I can't work on ublue tonight, need to do $DAYJOB, prep for some family stuff th...

j0rgeOP•6/1/23, 10:06 PM

yeah and I'm hopefully starting a new job here in about 2 weeks so more chillops

j0rgeOP•6/1/23, 10:07 PM

wait is this in akmods?

Jj0rge yeah and I'm hopefully starting a new job here in about 2 weeks so more chillops

akdev•6/1/23, 10:07 PM

Yay! What’s your new position?

bsherman•6/1/23, 10:07 PM

https://github.com/ublue-os/akmods/blob/main/build-prep.sh#L17

j0rgeOP•6/1/23, 10:07 PM

I can't say yet but I am very excited and it'll be awesome.

j0rgeOP•6/1/23, 10:07 PM

huh, if that was in there why didn't I have it in bluefin?

j0rgeOP•6/1/23, 10:08 PM

I think it's been in there long enough to trickle down?

Jj0rge I think it's been in there long enough to trickle down?

bsherman•6/1/23, 10:08 PM

well that doesn't trickle down, akmods builds, then main copies RPMS from akmods to install

j0rgeOP•6/1/23, 10:08 PM

oh oh, right, you clean up after yourself

j0rgeOP•6/1/23, 10:09 PM

j0rgeOP•6/1/23, 10:09 PM

I call this one dedication.pngdedication.png

bsherman•6/1/23, 10:09 PM

each Containerfile build needs to have it's own mkdir -p /var/lib/alternativesmkdir -p /var/lib/alternatives if it's going to install any RPMs which need alternatives... so, IMHO, it's just a nice default hack until upstream Fedora and/or package maintainers find better solutions for alternatives

j0rgeOP•6/1/23, 10:10 PM

ok so maybe the play is to add this as a snippet in the make your own page as a gotcha, that's a nice friday afternoon thing I can do

j0rgeOP•6/1/23, 10:10 PM

alas, my sabbatical is nearly over lol

Jj0rge alas, my sabbatical is nearly over lol

bsherman•6/1/23, 10:11 PM

as in, have to go back to work?

j0rgeOP•6/1/23, 10:11 PM

yeah

bsherman•6/1/23, 10:11 PM

also, i'm sorry if i came in and derailed some conversation, i just wanted to offere another solution

thanks for this, it was the solution I needed that was hidden in plain sight. 😄

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