tce-load -i compiletc meson gtk3-dev gtk3-gir gobject-introspection-dev vala-dev

https://ftp.gnome.org/pub/GNOME/sources/gtksourceview/4.6/gtksourceview-4.6.0.tar.xz

cd gtksourceview-4.6.0

mkdir build
cd build

CC="gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe" CXX="g++ -flto -fuse-linker-plugin -mtune=generic -Os -pipe -fno-exceptions -fno-rtti" meson --prefix=/usr/local --localstatedir=/var --buildtype=plain

ninja [1m 1.27s]
sudo ninja install

GtkSourceView 4.6.0 (4)

  Documentation: false
  Glade catalog: false
  Install tests: false
  Introspection: true
      Vala vapi: true

Directories:
         prefix: /usr/local
     includedir: /usr/local/include
         libdir: /usr/local/lib
        datadir: /usr/local/share