Clean out some default-installed directories

This helps us have enough disk space for our builders to be able to complete
successfully. For now, the choices are ad-hoc and 'definitely not needed'. This
should never fail the build, as everything our build needs should be inside
Docker.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/ci/scripts/clean-disk.sh b/src/ci/scripts/clean-disk.sh
new file mode 100755
index 00000000000..c50de37c492
--- /dev/null
+++ b/src/ci/scripts/clean-disk.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+# This script deletes some of the Azure-provided artifacts. We don't use these,
+# and disk space is at a premium on our builders.
+
+set -euo pipefail
+IFS=$'\n\t'
+
+source "$(cd "$(dirname "$0")" && pwd)/../shared.sh"
+
+# All the Linux builds happen inside Docker.
+if isLinux; then
+    # 6.7GB
+    sudo rm -rf /opt/ghc
+    # 16GB
+    sudo rm -rf /usr/share/dotnet
+fi