prettier devShell hook

flake.nix

@@ -19,14 +19,31 @@
           packages = [ packages.default packages.postgres ];
           shellHook = ''
             set -e
-            [ -d ./matabas-db ] || pg_ctl initdb --pgdata=./matabas-db
-            mkdir -p ./matabas-db/socket
 
-            [ -f matabas-db/matabas.log ] && mv -f matabas-db/matabas.log{,.old}
+            log() {
+              printf '\e[1m\e[38;5;87m==>\e[0m\e[1m %s.\e[0m\n' "$*"
+            }
+
+            log "Checking for existing postgres directory"
+            [ -d ./matabas-db ] || {
+              log "Non-existent, creating postgres directory (./matabas-db)"
+              pg_ctl initdb --pgdata=./matabas-db
+            }
+
+            [ -f matabas-db/matabas.log ] && {
+              log "Moving logs from last session into log archive (./matabas-db/matabas.log.old)"
+              cat matabas-db/matabas.log >> matabas-db/matabas.log.old
+              rm -f matabas-db/matabas.log
+            }
+
+            log "Starting postgres"
             pg_ctl start --pgdata=./matabas-db --log=./matabas-db/matabas.log --options="-p 2137"
-            trap 'pg_ctl stop --pgdata=./matabas-db' EXIT
+            trap 'log "Stopping postgres" && pg_ctl stop --pgdata=./matabas-db' EXIT
 
-            createdb -p 2137 matabas || : 3
+            log "Creating database"
+            createdb -p 2137 matabas 2>>./matabas-db/matabas.log || log "Database already exists, not overwriting"
+
+            log "Environment ready!"
 
             set +e
           '';