Внезапно!

The GNU Project has a clone of Pico called nano which has been developed because Pico's license was not a free software license, since distribution of a modified version of the code was ambiguously forbidden. By default nano attempts to mimic Pico to replicate the environment users are used to. However it can be configured to offer mouse support, auto indentation, regular expression searches and even syntax highlighting making it more useful. Newer versions of Pico as part of Alpine are released under the Apache License.

https://en.wikipedia.org/wiki/Pico_(text_editor)
Я думала, что Пико – клон наны, а, оказывается, всё наоборот.