message: install-deps.sh: Ensure GSL is really not installed as system-dep but only via embedded library.
diff: @@ -195,7 +195,6 @@ install_deps_FreeBSD()
  freetype2 \
  harfbuzz \
  libfmt \
  - microsoft-gsl \
  ncurses \
  ninja \
  pkgconf \
  @@ -221,7 +220,6 @@ install_deps_arch()
  fmt \
  fontconfig \
  git \
  - gsl \
  harfbuzz \
  ninja \
  qt5-base \
  @@ -264,7 +262,6 @@ install_deps_darwin()
  brew install $SYSDEP_ASSUME_YES \
  boost \
  catch2 \
  - cpp-gsl \
  fontconfig \
  fmt \
  freetype \
  