Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
No matching package to install: 'golang(github.com/alecthomas/chroma/v2)'
No matching package to install: 'golang(github.com/alecthomas/chroma/v2/lexers)'
No matching package to install: 'golang(github.com/alecthomas/chroma/v2/styles)'
No matching package to install: 'golang(github.com/edwvee/exiffix)'
No matching package to install: 'golang(github.com/kovidgoyal/imaging)'
No matching package to install: 'golang(github.com/zeebo/xxh3)'
No matching package to install: 'golang(golang.org/x/exp/constraints)'
No matching package to install: 'golang(golang.org/x/exp/rand)'
Several requested packages were not found in repositories.