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Go
Golang 1.13
Fedora 31 provides *Golang* version 1.13, up from version 1.12 in Fedora 30.
By setting `GOSUMDB=off` and `GOPROXY=direct` environment variables, Fedora slightly diverged from the *Golang* upstream default configuration. This change preserves the ability of users to set the environment variables to value they desire and prevents unintended leaks of personal information. There is no impact on users of the compiler.
Notable changes include:
New features
Version 1.13 supports more uniform and modernized set of number literal prefixes.
The new `GOSUMDB` environment variable has been added. It identifies the name, and optionally the public key and server URL of the checksum database. This is done in order to consult the checksums of modules which are not yet listed in the `go.sum` file of the main module.
The `go` command verifies the mapping between pseudo-versions and version-control metadata.
The `go env` command accepts a `-w` flag to set the per-user default value. A `-u` flag unsets the previously-set default. The defaults set through `go env -w` command are stored in the `go/env` file within the `os.UserConfigDir()` function.
The assembler supports many of the atomic instructions introduced in ARM v8.1.
The Transport Layer Security (TLS) 1.3 protocol is supported in the `crypto/tls` package by default.
Version 1.13 supports error wrapping.
Deprecations
Version 1.13 is the last one that runs on the Native Client (NaCl) sandboxing technology.
The `go -get` subcommand no longer supports the `-m` flag.
As of version 1.13, the `godoc` webserver is not included in the main binary distribution.
For full information about this release, see the [citetitle]_link:++https://tip.golang.org/doc/go1.13++[upstream release notes]_.
Golang packaging guidelines
Fedora has adopted a new set of packaging guidelines for Golang. If you maintain any Go packages, you can view them in the link:https://docs.fedoraproject.org/en-US/packaging-guidelines/Golang/[Packaging Guidelines] document.