I am trying to see what slowroll is like and used this guide https://en.opensuse.org/openSUSE:Slowroll

This is what I get updating Tumbleweed: (most is in red but did not copy)

TWSLOW:~ # zypper ref ; zypper -n dup
Retrieving repository 'base-non-oss' metadata ...........................[error]
Repository 'base-non-oss' is invalid.
[base-non-oss|https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/non-oss/] Valid metadata not found at specified URL
History:
 - Timeout exceeded when accessing 'https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/non-oss/repodata/876557493f31abad37825b61e24c91ddc5859b8a65315e16258318341df1dcc2-appdata.xml.gz'.
 - Can't provide ./repodata/876557493f31abad37825b61e24c91ddc5859b8a65315e16258318341df1dcc2-appdata.xml.gz

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'base-non-oss' because of the above error.
Retrieving repository 'base-oss' metadata ...............................[error]
Repository 'base-oss' is invalid.
[base-oss|https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/oss/] Valid metadata not found at specified URL
History:
 - Timeout exceeded when accessing 'https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/oss/repodata/e3c8e86e179112dc47c363e8b83d65fa60e244be612f1020997e05afa864a5be-appdata.xml.gz'.
 - Can't provide ./repodata/e3c8e86e179112dc47c363e8b83d65fa60e244be612f1020997e05afa864a5be-appdata.xml.gz

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'base-oss' because of the above error.
Repository 'h264' is up to date.                                                
Repository 'packman' is up to date.                                             
Repository 'update' is up to date.                                              
Some of the repositories have not been refreshed because of an error.
Timeout exceeded when accessing 'https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/non-oss/repodata/876557493f31abad37825b61e24c91ddc5859b8a65315e16258318341df1dcc2-appdata.xml.gz'.
Retrying in 30 seconds...
Timeout exceeded when accessing 'https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/non-oss/repodata/876557493f31abad37825b61e24c91ddc5859b8a65315e16258318341df1dcc2-appdata.xml.gz'.
Retrying in 30 seconds...
Timeout exceeded when accessing 'https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/non-oss/repodata/876557493f31abad37825b61e24c91ddc5859b8a65315e16258318341df1dcc2-appdata.xml.gz'.
Retrying in 30 seconds...
Timeout exceeded when accessing 'https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/non-oss/repodata/876557493f31abad37825b61e24c91ddc5859b8a65315e16258318341df1dcc2-appdata.xml.gz'.
Retrying in 30 seconds...

Error building the cache:
[base-non-oss|https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/non-oss/] Valid metadata not found at specified URL
History:
 - ABORT request: Aborting requested by user
 - Can't provide ./repodata/876557493f31abad37825b61e24c91ddc5859b8a65315e16258318341df1dcc2-appdata.xml.gz
 - Timeout exceeded when accessing 'https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/non-oss/repodata/876557493f31abad37825b61e24c91ddc5859b8a65315e16258318341df1dcc2-appdata.xml.gz'.

Warning: Skipping repository 'base-non-oss' because of the above error.
Timeout exceeded when accessing 'https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/oss/repodata/e3c8e86e179112dc47c363e8b83d65fa60e244be612f1020997e05afa864a5be-appdata.xml.gz'.
Retrying in 30 seconds...
Timeout exceeded when accessing 'https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/oss/repodata/e3c8e86e179112dc47c363e8b83d65fa60e244be612f1020997e05afa864a5be-appdata.xml.gz'.
Retrying in 30 seconds...
Timeout exceeded when accessing 'https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/oss/repodata/e3c8e86e179112dc47c363e8b83d65fa60e244be612f1020997e05afa864a5be-appdata.xml.gz'.
Retrying in 30 seconds...
Timeout exceeded when accessing 'https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/oss/repodata/e3c8e86e179112dc47c363e8b83d65fa60e244be612f1020997e05afa864a5be-appdata.xml.gz'.
Retrying in 30 seconds...
Error building the cache:
[base-oss|https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/oss/] Valid metadata not found at specified URL
History:
 - ABORT request: Aborting requested by user
 - Can't provide ./repodata/e3c8e86e179112dc47c363e8b83d65fa60e244be612f1020997e05afa864a5be-appdata.xml.gz
 - Timeout exceeded when accessing 'https://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/base/repo/oss/repodata/e3c8e86e179112dc47c363e8b83d65fa60e244be612f1020997e05afa864a5be-appdata.xml.gz'.

Warning: Skipping repository 'base-oss' because of the above error.
Some of the repositories have not been refreshed because of an error.
Loading repository data...
Reading installed packages...
Warning: You are about to do a distribution upgrade with all enabled repositories. Make sure these repositories are compatible before you continue. See 'man zypper' for more information about this command.
Computing distribution upgrade...
19 Problems:
Problem: nothing provides 'libavif.so.15()(64bit)' needed by the to be installed libwebkit2gtk-4_1-0-2.40.5-2.4.x86_64
Problem: nothing provides 'libavif.so.15()(64bit)' needed by the to be installed libwebkit2gtk-4_0-37-2.40.5-2.4.x86_64
Problem: nothing provides 'libSPIRV-Tools-shared-2023.3~rc1.so()(64bit)' needed by the to be installed libvkd3d-shader1-1.8-1.1.x86_64
Problem: nothing provides 'libavif.so.15()(64bit)' needed by the to be installed libgd3-2.3.3-1.1.x86_64
Problem: nothing provides 'libHSblaze-builder-0.4.2.2-8UxXzIHQH0dLJoWXyTpU1h-ghc9.4.6.so()(64bit)' needed by the to be installed ghc-xml-conduit-1.9.1.3-1.4.x86_64
Problem: nothing provides 'libHSblaze-builder-0.4.2.2-8UxXzIHQH0dLJoWXyTpU1h-ghc9.4.6.so()(64bit)' needed by the to be installed ghc-typst-0.1.0.0-1.4.x86_64
Problem: nothing provides 'libHSblaze-builder-0.4.2.2-8UxXzIHQH0dLJoWXyTpU1h-ghc9.4.6.so()(64bit)' needed by the to be installed ghc-skylighting-format-latex-0.1-1.3.x86_64
Problem: nothing provides 'libHSblaze-builder-0.4.2.2-8UxXzIHQH0dLJoWXyTpU1h-ghc9.4.6.so()(64bit)' needed by the to be installed ghc-skylighting-format-context-0.1.0.2-1.3.x86_64
Problem: nothing provides 'libHSblaze-builder-0.4.2.2-8UxXzIHQH0dLJoWXyTpU1h-ghc9.4.6.so()(64bit)' needed by the to be installed ghc-skylighting-format-blaze-html-0.1.1.1-1.3.x86_64
Problem: nothing provides 'libHSblaze-builder-0.4.2.2-8UxXzIHQH0dLJoWXyTpU1h-ghc9.4.6.so()(64bit)' needed by the to be installed ghc-skylighting-format-ansi-0.1-1.3.x86_64
Problem: nothing provides 'libHSblaze-builder-0.4.2.2-8UxXzIHQH0dLJoWXyTpU1h-ghc9.4.6.so()(64bit)' needed by the to be installed ghc-skylighting-core-0.13.4.1-1.4.x86_64
Problem: nothing provides 'libHSblaze-builder-0.4.2.2-8UxXzIHQH0dLJoWXyTpU1h-ghc9.4.6.so()(64bit)' needed by the to be installed ghc-skylighting-0.13.4.1-1.5.x86_64
Problem: nothing provides 'libHSblaze-builder-0.4.2.2-8UxXzIHQH0dLJoWXyTpU1h-ghc9.4.6.so()(64bit)' needed by the to be installed ghc-pandoc-3.1.3-1.5.x86_64
Problem: nothing provides 'libHSblaze-builder-0.4.2.2-8UxXzIHQH0dLJoWXyTpU1h-ghc9.4.6.so()(64bit)' needed by the to be installed ghc-http-client-tls-0.3.6.1-1.3.x86_64
Problem: nothing provides 'libHSblaze-builder-0.4.2.2-8UxXzIHQH0dLJoWXyTpU1h-ghc9.4.6.so()(64bit)' needed by the to be installed ghc-http-client-0.7.14-1.4.x86_64
Problem: nothing provides 'libHSblaze-builder-0.4.2.2-8UxXzIHQH0dLJoWXyTpU1h-ghc9.4.6.so()(64bit)' needed by the to be installed ghc-citeproc-0.8.1-1.4.x86_64
Problem: nothing provides 'libSPIRV.so.12()(64bit)' needed by the to be installed libavfilter7_110-4.4.4-1699.4.pm.1.x86_64
Problem: nothing provides 'libSPIRV.so.12()(64bit)' needed by the to be installed libavfilter7_110-4.4.4-1699.4.pm.1.x86_64
Problem: nothing provides 'libSPIRV.so.12()(64bit)' needed by the to be installed libavfilter7_110-4.4.4-1699.4.pm.1.x86_64

Problem: nothing provides 'libavif.so.15()(64bit)' needed by the to be installed libwebkit2gtk-4_1-0-2.40.5-2.4.x86_64
 Solution 1: deinstallation of libwebkit2gtk-4_1-0-2.40.5-3.1.x86_64
 Solution 2: keep obsolete libwebkit2gtk-4_1-0-2.40.5-3.1.x86_64
 Solution 3: break libwebkit2gtk-4_1-0-2.40.5-2.4.x86_64 by ignoring some of its dependencies

Choose from above solutions by number or skip, retry or cancel [1/2/3/s/r/c/d/?] (c): c