- Packaging improvements:
* Remove unused BuildRequires: zstd does not match archive format
* _service recompress change from xz to gz. The source archive is
not large and xz unpack times are noticeably slower. If gz is
not ideal for a given application, zstd is a good alternative.
* Normalize go build invocation extracted from upstream Makefile
* Build PIE with pattern that may become recommended procedure:
%%ifnarch ppc64 GOFLAGS="-buildmode=pie" %%endif go build
A go toolchain buildmode default config would be preferable
but none exist at this time.
* Drop mod=vendor, go1.14+ will detect vendor dir and auto-enable
* Remove go build -a forced rebuild of packages. Rebuild is not
needed in an OBS rpmbuild environment.
* Remove forced use of pure Go DNS resolver via -tags netgo or
GODEBUG=netdns=go. The Go DNS resolver is already the default
(https://pkg.go.dev/net#hdr-Name_Resolution).
* Remove ldflags -X entries for upstream import path and version.
This information is embedded in binaries with go1.18+ and
available via go version -m or runtime/debug.ReadBuildInfo().
* Move %check section directly after %build