maidsafe.sh v2

#!/bin/bash

# Fedora 23 x86_64
# Always first updating rust and cargo
# If there are pull changes, always doing "cargo clean & update"

safedir=`pwd`

echo ""
echo -n "Have you run rustup.sh today? [y|N]: "
read yorn

if test "$yorn" != "y"
then
	curl -sSf https://static.rust-lang.org/rustup.sh | sh -s -- --channel=nightly
	rm -fr ./cargo-nightly-x86_64-unknown-linux-gnu*
	wget https://static.rust-lang.org/cargo-dist/cargo-nightly-x86_64-unknown-linux-gnu.tar.gz
	tar xvfz ./cargo-nightly-x86_64-unknown-linux-gnu.tar.gz
	cd ./cargo-nightly-x86_64-unknown-linux-gnu && ./install.sh
fi

cd $safedir
echo ""
echo -n "Hit ENTER to continue: "
read junk

dirs="crust-routing	\
		routing-safe_client	\
		safe_client-safe_vault	\
		safe_vault-safe_nfs	\
		safe_nfs-finished"

for dir in $dirs
do
	currdir="${dir%-*}"
	nextdir="${dir#*-}"
	cd ${safedir}
	clear
	echo ""
	echo "Pulling dir -->${currdir}"
	echo ""

	if [ ! -d $currdir ]; then
		git clone https://github.com/maidsafe/$currdir
		cd $currdir
	else
		cd $currdir
		git pull origin master
	fi

	echo ""
	echo -n "Skip this directory -->${currdir} ? [y|N]: "
	read yorn

	if test "$yorn" = "y"
	then
		continue
	else
		for action in clean	\
				update	\
				build	\
				tst
		do
			echo ""
			echo -n "Directory -->${currdir} Action -->${action}  Skip this action? [y|N]: "
			read yorn

			if test "$yorn" = "y"
			then
				continue
			fi

			case "$action" in
				clean)
					cargo clean
		    		;;
				update)
					cargo update
		    		;;
				build)
					cargo build
		    		;;
				tst)
#					xterm -maximized -hold -e "cd ${dir} && RUST_TEST_THREADS=1 cargo test" &
					parms=`grep Features .travis.yml | sed -e 's/^.*F/--f/' -e 's/=/ /'`
					RUST_TEST_THREADS=1 cargo test --release $parms
		    		;;
				*)
					echo "Invalid option, choose again..."
					read junk
		    		;;
			esac

			echo ""
			echo -n "Current loop -->${currdir}-->$action  Hit ENTER to continue: "
			read junk
		done

		echo ""
		echo ""
		echo -n "Next loop -->${nextdir}-->pull  Hit ENTER to continue: "
		read junk
	fi
done

• Line 15 installs Rust (you can append -y to the command by the way to avoid having to enter "y" manually when the script runs), but then the next four lines download, build and install the same version of Rust, so I guess you don't need both options?
• If you never modify the MaidSafe sources, you could maybe simplify things by always removing the old repo and cloning from scratch every time the script runs. If you do git clone <repo> --depth 1 it's pretty fast, and that would mean you could avoid the cargo clean and cargo update steps.
• It looks like you're always running the tests with RUST_TEST_THREADS=1 - this will slow down those libs' tests which don't require a single-threaded test environment - but no big deal really.
• You could speed things up further by running cargo build --release rather than building in Debug then testing in Release.

• I know about the "-y" - I routinely don't use it - I think it allows me to pause and think or something . .
• I sort of knew installing cargo was doing Rust too - I will prob just comment out the first one. Presumably at some stage when things are stable, I could probably comment out all of it . .
• The plan was that I would get up to speed with Rust and start being useful but I am not making much progress (too many other dramas going on) but I will probably leave it as is for the time being . .
• I wasn't sure about the threading so I just did it for everything . .
• There was some problem that needed Debug at some point - I will try your method and keep commented stuff

The other thing was that if a pull did not get anything new, I would skip doing anything on that dir altogether . .

Presumably at some stage when things are stable, I could probably comment out all of it . .

Yeah - we're keen to be able to move off requiring Rust Nightly. Crust is the only one of our projects which forces us onto the Nightly channel, mainly because of the networking dependencies I think.