install: Use set -x when installing node, shellcheck, shfmt, tx.

This makes it clearer which step failed if there’s an error.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

scripts/lib/install-node

@@ -22,6 +22,7 @@ check_version() {
 }
 
 if ! check_version 2>/dev/null; then
+    set -x
     tmpdir="$(mktemp -d)"
     trap 'rm -r "$tmpdir"' EXIT
     cd "$tmpdir"

tools/setup/install-shellcheck

@@ -16,6 +16,7 @@ version: $version
 }
 
 if ! check_version 2>/dev/null; then
+    set -x
     tmpdir="$(mktemp -d)"
     trap 'rm -r "$tmpdir"' EXIT
     cd "$tmpdir"

tools/setup/install-shfmt

@@ -21,6 +21,7 @@ check_version() {
 }
 
 if ! check_version 2>/dev/null; then
+    set -x
     tmpdir="$(mktemp -d)"
     trap 'rm -r "$tmpdir"' EXIT
     cd "$tmpdir"

tools/setup/install-transifex-cli

@@ -28,6 +28,7 @@ check_version() {
 }
 
 if ! check_version 2>/dev/null; then
+    set -x
     tmpdir="$(mktemp -d)"
     trap 'rm -r "$tmpdir"' EXIT
     cd "$tmpdir"