modules providing all transitively imported packages, not only
the module providing the target package.

Note that 'go mod vendor' only copies packages that are transitively
imported by packages in the current module. If a new package is needed,

pkg log/syslog (darwin-arm64), const LOG_WARNING Priority
pkg log/syslog (darwin-arm64), func Dial(string, string, Priority, string) (*Writer, error)
pkg log/syslog (darwin-arm64), func New(Priority, string) (*Writer, error)
pkg log/syslog (darwin-arm64), func NewLogger(Priority, int) (*log.Logger, error)
pkg log/syslog (darwin-arm64), method (*Writer) Alert(string) error

pkg syscall (freebsd-riscv64), const SYS_THR_KILL2 = 481 #53466
pkg syscall (freebsd-riscv64), const SYS_THR_KILL2 ideal-int #53466
pkg syscall (freebsd-riscv64), const SYS_THR_NEW = 455 #53466
pkg syscall (freebsd-riscv64), const SYS_THR_NEW ideal-int #53466
pkg syscall (freebsd-riscv64), const SYS_THR_SELF = 432 #53466
pkg syscall (freebsd-riscv64), const SYS_THR_SELF ideal-int #53466

There are, however, times when we cannot maintain complete compatibility.
If code depends on buggy (including insecure) behavior,
then fixing the bug will break that code.
New features can also have similar impacts:
enabling the HTTP/2 use by the HTTP client broke programs
connecting to servers with buggy HTTP/2 implementations.
These kinds of changes are unavoidable and

pkg syscall (windows-386), const CERT_TRUST_REVOCATION_STATUS_UNKNOWN = 64
pkg syscall (windows-386), const CREATE_ALWAYS = 2
pkg syscall (windows-386), const CREATE_NEW = 1
pkg syscall (windows-386), const CREATE_NEW_PROCESS_GROUP = 512
pkg syscall (windows-386), const CREATE_NEW_PROCESS_GROUP ideal-int
pkg syscall (windows-386), const CREATE_UNICODE_ENVIRONMENT = 1024
pkg syscall (windows-386), const CRYPT_DEFAULT_CONTAINER_OPTIONAL = 128

### New unique package

The new [unique](/pkg/unique) package provides facilities for
canonicalizing values (like "interning" or "hash-consing").

Any value of comparable type may be canonicalized with the new
`Make[T]` function, which produces a reference to a canonical copy of
the value in the form of a `Handle[T]`.
Two `Handle[T]` are equal if and only if the values used to produce the
handles are equal, allowing programs to deduplicate values and reduce

shipped. Each file adds new lines but does not remove any.

except.txt lists features that may disappear without breaking true
compatibility.

Starting with go1.19.txt, each API feature line must end in "#nnnnn"
giving the GitHub issue number of the proposal issue that accepted
the new API. This helps with our end-of-cycle audit of new APIs.
The same requirement applies to next/* (described below), which will

will succeed.
Such code should use a non-blocking receive instead.

These new behaviors are only enabled when the main Go program
is in a module with a `go.mod` `go` line using Go 1.23.0 or later.
When Go 1.23 builds older programs, the old behaviors remain in effect.
The new [GODEBUG setting](/doc/godebug) [`asynctimerchan=1`](/pkg/time/#NewTimer)
can be used to revert back to asynchronous channel behaviors

# Release Notes

The `initial` and `next` subdirectories of this directory are for release notes.

## For developers

Release notes should be added to `next` by editing existing files or creating
new files. **Do not add RELNOTE=yes comments in CLs.** Instead, add a file to
the CL (or ask the author to do so).

At the end of the development cycle, the files will be merged by being
concatenated in sorted order by pathname. Files in the directory matching the

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