feat: Show environment versions on login

2 files changed, 57 insertions, 0 deletions

diff --git a/.bash/aliases.bash b/.bash/aliases.bash
index 76fb793..42e1639 100644
--- a/.bash/aliases.bash
+++ b/.bash/aliases.bash
@@ -301,6 +301,61 @@ function update-user-extensions {
 		printf '%b/usr/bin/cargo not found, not updating Rust user installations.%b\n' "$mywarn" "$myrset"
 	fi
 }
+# Display developer environment base versions.
+function list-env-versions {
+	hline
+	printf 'Versions:\n'
+	(
+		printf 'Bash;%b\n' "$BASH_VERSION"
+		if [ -r '/opt/puppetlabs/puppet/VERSION' ]; then
+			printf 'Puppet;%b\n' "$(cat /opt/puppetlabs/puppet/VERSION)"
+		fi
+		ruver="$(ruby -e 'print(RUBY_VERSION)' 2>/dev/null)"
+		rsver="$(/usr/bin/ruby -e 'print(RUBY_VERSION)' 2>/dev/null)"
+		if [ "$ruver" != "$rsver" ]; then
+			printf 'Ruby;%b (System: %b)\n' "$ruver" "$rsver"
+		else
+			printf 'Ruby;%b\n' "$rsver"
+		fi
+		# This is a mere string but in this case this is exactly what we want
+		puver="$(python -c 'from platform import python_version;print(python_version())' 2>/dev/null)"
+		psver="$(/usr/bin/python -c 'from platform import python_version;print(python_version())' 2>/dev/null)"
+		if [ -n "$puver" ] || [ -n "$psver" ]; then
+			if [ "$puver" != "$psver" ]; then
+				printf 'Python;%b (System: %b)\n' "$puver" "$psver"
+			else
+				printf 'Python;%b\n' "$psver"
+			fi
+		fi
+		huver="$(ghci --version 2>/dev/null | awk '{print $NF}')"
+		hsver="$(/usr/bin/ghci --version 2>/dev/null | awk '{print $NF}')"
+		cuver="$(cabal --version 2>/dev/null | awk '{print $NF}')"
+		csver="$(/usr/bin/cabal --version 2>/dev/null | awk '{print $NF}')"
+		stver="$(stack --version 2>/dev/null | head -n1)"
+		if [ -n "$stver" ]; then
+			shver="$(stack ghc -- --version 2>/dev/null | awk '{print $NF}')"
+		fi
+		printf 'Haskell\n'
+		if [ -n "$huver" ] || [ -n "$hsver" ]; then
+			if [ "$huver" != "$hsver" ]; then
+				printf ';GHCI:\t%b (System: %b)\n' "$huver" "$hsver"
+			else
+				printf ';GHCI:\t%b\n' "$psver"
+			fi
+		fi
+		if [ -n "$cuver" ] || [ -n "$csver" ]; then
+			if [ "$cuver" != "$csver" ]; then
+				printf ';Cabal:\t%b (System: %b)\n' "$cuver" "$csver"
+			else
+				printf ';Cabal:\t%b\n' "$psver"
+			fi
+		fi
+		if [ -n "$stver" ]; then
+			printf ';Stack:\t%b, GHC: %b\n' "$stver" "$shver"
+		fi
+	) | column -ts';' | sed 's/^/\t/'
+	hline
+}
 # ----- OTHER STUFF ----- #
 for cmmd in batcat bat; do
 	if command -v "$cmmd" > /dev/null; then
diff --git a/.bash/postexec.bash b/.bash/postexec.bash
index 8beee31..0eafd2b 100644
--- a/.bash/postexec.bash
+++ b/.bash/postexec.bash
@@ -22,3 +22,5 @@ for gitpsrc in "/usr/share/git/git-prompt.sh" "/usr/local/share/git/git-prompt.s
 		break
 	fi
 done
+
+list-env-versions