In-place upgrade STS-4.10 to STS-4.12 failing

[space88man]

Describe the bug
I am trying to upgrade an STS 4.10 directory to STS 4.12 and failing at "Check for Updates".
Platform is Linux.

To Reproduce

• already installed STS 4.10
• upgrade as much as possible using Marketplace: Markeplace shows 4.12.0.RELEASE and is at state Change
• goto Available Software Sites
• reload https://download.springsource.com/release/TOOLS/sts4/update/latest
• reload https://download.springsource.com/release/TOOLS/sts4-language-server-integrations
• reload https://download.eclipse.org/releases/latest

Error

An error occurred while collecting items to be installed
session context was:(profile=DefaultProfile, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
No repository found containing: osgi.bundle,org.springframework.boot.ide.branding,4.12.0.202109130635-RELEASE
No repository found containing: org.eclipse.update.feature,org.springframework.boot.ide.branding.feature,4.12.0.202109130635
No repository found containing: binary,org.springframework.boot.ide.branding.sts4.executable.gtk.linux.x86_64,4.12.0.202109130635```

[space88man]

I saw this: https://stackoverflow.com/questions/69214960/cannot-satisfy-dependency-in-sts4-org-springframework-boot-ide-branding-sts4-4-1.

However this is not an existing Eclipse installation - it is sts-4.10.0.RELEASE trying to move to sts-4.12.0.RELEASE.

[space88man]

Well to my surprise this method worked:

• add two more update sites
• duplicate Eclipse site and replace /latest with /2021-09
• duplicate STS 4 site replace /latest with /e4.21

Then the in-place upgrade works.

[martinlippert]

Glad to hear you found a solution for this. My guess is that this is related to stale cache data for the repositories, so deleting the update sites from the preferences, restarting the IDE, and adding them back should have worked as well. Looks like your added update sites worked around this as well... :-)

Ideally, you don't need all those update sites. This one should be enough:

https://download.springsource.com/release/TOOLS/sts4/update/latest/

It refers to the latest Eclipse release as well as the latest matching STS4 release for that Eclipse version, so updating from that should keep you up-to-date with the latest Eclipse and STS4 - in case you want to clean up your preferences... :-)