Increase the number of cores used in build. Make various cosmetic fixes.
# is in the current source directory.
# Packages can be added once the package manager is configured
# to work for this particular version number.
-make unix-style PREFIX=$PREFIX PKGS=""
+make unix-style CPUS="$CPU_COUNT" PREFIX="$PREFIX" PKGS=""
# Set up the package manager.
# Following the steps show at
# https://github.com/jackfirth/racket-docker/blob/master/racket.Dockerfile
-export PATH=$PATH:$PREFIX/bin
+export PATH="$PATH:$PREFIX/bin"
raco setup
raco pkg config --set catalogs \
"https://download.racket-lang.org/releases/$PKG_VERSION/catalog/" \
