tcl-memchan-dev 2.3+dfsg-1build1 (amd64 binary) in ubuntu noble

 Allows the creation of I/O channels, which store data in memory, not
 on disk. It implements the channel types fifo, null, random and
 zero; and provides a C API for creating custom memory channels.
 .
 This package contains files to be used for development of C-based
 extensions which use the Memchan library.