Sunshine fails to start in Archlinux, icu has updated to 76 but it's linking to 75

[knyipab]

Describe the Bug

sunshine: error while loading shared libraries: libicuuc.so.75: cannot open shared object file: No such file or directory

Likely becuz arch is providing /usr/lib/libicuuc.so.76. Ever consider to link to /usr/lib/libicuuc.so instead?

~Also, it's not the latest version (v2025.122.141614 is the latest). Ever consider to make a Github action to automate this? Thanks.~

Expected Behavior

No response

Additional Context

No response

[ReenigneArcher]

Also, it's not the latest version. Ever consider to make a Github action to automate this? Thanks.

What do you mean by this? What isn't the latest version? This runs automatically in a GitHub workflow everyday to rebuild things.

[knyipab]

Sorry, I think I mistaken the release shown in LizardByte/pacman-repo-builder to be the latest of pacman repo. And perhaps that's not true and please ignore if that's the case and focus on the ICU issue. Thank you~

[samvv]

I'm running Arch, configured an Arch VM with Sunshine yesterday and am not seeing this issue.

[murkl]

Strange, I also get the error on startup under Arch Linux: sunshine: error while loading shared libraries: libicuuc.so.75: cannot open shared object file: No such file or directory

Workaround: I have installed icu75 from the AUR.

[ZenMaxe]

This issue is caused by a partial update. If you primarily use the AUR, your yay/paru might not have detected the compatibility issue and updated icu separately.

To fix this, you need a full system update:

sudo pacman -Syu

This should resolve the issue.

[knyipab]

@ZenMaxe

Fyip, I do not use AUR or yay at all. And I always upgrade my system using sudo pacman -Syu.

Fyi, my computer has sunshine v2025.122.141614-1 icu 76.1-1

[murkl]

This issue is caused by a partial update. If you primarily use the AUR, your yay/paru might not have detected the compatibility issue and updated icu separately.

To fix this, you need a full system update:

sudo pacman -Syu

This should resolve the issue.

That is certainly not the problem! The icu package was updated on 2025-02-20 and I think since then it doesn't work anymore, because sunshine needs version 75 and this is now 76.

[ReenigneArcher]

The icu package was updated on 2025-02-20

Sunshine is rebuilt every single day, so you need to update/re-install it whenever you do a pacman update.

[knyipab]

I see and should be workarounded by sudo pacman -S sunshine.

So this sunshine package and pacman repo do not work like the usual archlinux packages which increment pkgrel in every rebuild. Since pkgrel is not incremented, users will not receive a newer build by running the usual sudo pacman -Syu. Instead, users would have to re-install the package specifically and manually by sudo pacman -S sunshine whenever they observe incompatibility.

This appears to be not intuitive. Does it sound better to increment pkgrel whenever any of its dependencies gets upgraded (deps pkgver+pkgrel)? Perhaps some build system could have relevant automation but I am not sure where we can find.

Edit: Another idea: if nothing in deps has changed, does rebuild gives the file of same checksum? If so, can we increment pkgrel by detecting a change in checksum?

[ReenigneArcher]

@knyipab I agree it's not intuitive. The easiest thing is probably to compare the checksums and bump the pkgrel accordingly. I guess something would need to be added to https://github.com/LizardByte/pacman-repo-builder ... I'll accept a PR but for now I don't plan on doing this myself.

It might be easier to just static link dependencies in Sunshine and then this issue wouldn't even pop up.

[murkl]

I see and should be workarounded by sudo pacman -S sunshine.

So this sunshine package and pacman repo do not work like the usual archlinux packages which increment pkgrel in every rebuild. Since pkgrel is not incremented, users will not receive a newer build by running the usual sudo pacman -Syu. Instead, users would have to re-install the package specifically and manually by sudo pacman -S sunshine whenever they observe incompatibility.

This appears to be not intuitive. Does it sound better to increment pkgrel whenever any of its dependencies gets upgraded (deps pkgver+pkgrel)? Perhaps some build system could have relevant automation but I am not sure where we can find.

Edit: Another idea: if nothing in deps has changed, does rebuild gives the file of same checksum? If so, can we increment pkgrel by detecting a change in checksum?

Great, sudo pacman -S sunshine solves the problem!

[LizardByte-bot]

It seems this issue hasn't had any activity in the past 90 days. If it's still something you'd like addressed, please let us know by leaving a comment. Otherwise, to help keep our backlog tidy, we'll be closing this issue in 10 days. Thanks!

[knyipab]

Hi, leave a comment to prevent it from being stale. Great to have this issue fixed.

[ReenigneArcher]

Closing in favor of https://github.com/LizardByte/roadmap/issues/17 and https://github.com/LizardByte/roadmap/issues/11 on our roadmap

[LizardByte-bot]

It seems this issue hasn't had any activity in the past 90 days. If it's still something you'd like addressed, please let us know by leaving a comment. Otherwise, to help keep our backlog tidy, we'll be closing this issue in 10 days. Thanks!

[healytech]

I ran a system update this morning and now I'm getting: Sunshine: error while loading shared libraries: libicuuc.so.76: cannot open shared object file: No such file or directory"

I've tried: sudo pacman -Syu sudo pacman -S sunshine

Still fails after running those commands with the same error.

[underspiffy]

I ran a system update this morning and now I'm getting: Sunshine: error while loading shared libraries: libicuuc.so.76: cannot open shared object file: No such file or directory"

I've tried: sudo pacman -Syu sudo pacman -S sunshine

Still fails after running those commands with the same error.

I am also experiencing this issue!

[ReenigneArcher]

If you're using AUR you need to re-install sunshine to relink everything.

[healytech]

If you're using AUR you need to re-install sunshine to relink everything.

I just ran: paru -S sunshine paru -S --rebuild sunshine

No luck.

[ReenigneArcher]

Maybe need to clear your build cache

[SboRI]

Similar issue here, checked

ls /usr/lib/libicuuc.so*
lrwxrwxrwx    - root  4 Nov 16:46  /usr/lib/libicuuc.so -> libicuuc.so.78.1
lrwxrwxrwx    - root  4 Nov 16:46  /usr/lib/libicuuc.so.78 -> libicuuc.so.78.1
.rwxr-xr-x 2,1M root  4 Nov 16:46  /usr/lib/libicuuc.so.78.1

with sudo ln -s /usr/lib/libicuuc.so.78 /usr/lib/libicuuc.so.76

the error is

sunshine
sunshine: symbol lookup error: sunshine: undefined symbol: ucnv_getMaxCharSize_76

[healytech]

Maybe need to clear your build cache

Ran: paru -Scc and said yes to all to clear cache. sudo pacman -Syu sudo pacman -S sunshine

Still getting: sunshine: error while loading shared libraries: libicuuc.so.76: cannot open shared object file: No such file or directory

[healytech]

The following command seems to have solved my issue: paru -S icu76

[korvatap]

Today this package conflict issue is not a problem anymore. There was an update to sunshine which fixed this issue for me