Package pkix contains shared, low level structures used for ASN.1 parsing and serialization of X.509 certificates, CRL and OCSP.
Package sql provides a generic interface around SQL (or SQL-like) databases.
Package driver defines interfaces to be implemented by database drivers as used by package sql.
Package buildinfo provides access to information embedded in a Go binary about how it was built.
Package dwarf provides access to DWARF debugging information loaded from executable files, as defined in the DWARF 2.0 Standard at http://dwarfstd.org/doc/dwarf-2.0.0.pdf.
Package gosym implements access to the Go symbol and line number tables embedded in Go binaries generated by the gc compilers.