licence: SchOS is GPL-2.0-or-later, no longer Apache-2.0

Nexoniarz is the sole author and SchOS was never published under
Apache-2.0, so this is a straight relicence. LICENSE is the FSF GPLv2 text,
every first-party SPDX header moves to GPL-2.0-or-later, and NOTICE,
README.md, docs/licensing.md and the site say so. projects/schfs-linux
follows the rest of the tree.

The GPL gives copyleft: a fork has to ship its source. It also lifts the
old "Linux drivers, never" rule, since GPL-2.0-only code combines with
GPL-2.0-or-later. "Or later" leaves room for GPLv3, but one binary still
has to pick one version, so docs/licensing.md now keeps Apache-2.0 and
GPLv3 code out of the kernel to keep Linux code possible there. BSD
4-clause code goes from "avoid" to "no", because the advertising clause
is GPL-incompatible.

LDLS still ships no .ko. That boundary is now project policy rather than
a legal requirement, and ldls.md, devices.md and licensing.md section 6
say so. refmod declares license=GPL, and ldls-check passes (27 checks).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Nexoniarz 2026-10-22 08:48:45 +02:00
commit 26bca020b6
135 changed files with 959 additions and 689 deletions

View file

@ -1,4 +1,4 @@
# SPDX-License-Identifier: Apache-2.0
# SPDX-License-Identifier: GPL-2.0-or-later
# kilo — BSD-2-Clause: https://github.com/antirez/kilo
#
# SchOS's text editor, installed as sysroot/bin/kilo with `edit` beside it.
@ -11,9 +11,9 @@
#
# The whole editor is one 1,300-line C file with no dependencies beyond libc --
# termios and TIOCGWINSZ, both of which SchOS already has because zsh needs
# them. That is the entire reason it was chosen over nano: nano is GPLv3 and
# wants ncurses at runtime, and GPLv3 cannot be combined with Apache-2.0 any
# more than GPLv2 can. See ../../docs/licensing.md.
# them. That, and licensing at the time, is why it was chosen over nano: nano
# is GPLv3 and wants ncurses at runtime, and SchOS was then Apache-2.0. Under
# GPL-2.0-or-later nano is possible, but kilo already does the job.
#
# What it does not do: no undo, no multiple buffers, no configuration, no
# mouse, no UTF-8 beyond passing bytes through. It edits one file.