I think it was the right idea to enable it by default, but probably having a way to detect its support first might be good.

The change broke installations for:

• centos6
• centos7
• debian8
• debian9
• gentoo
• ubuntu12.04

Grid comparison:

• 2.1.3
• 2.2.2

Open these up in to new tabs and swap between them to see the differences.

Full reports:

• 2.1.3: https://buildkite.com/organizations/grahamc/pipelines/nix-install-matrix/builds/33/jobs/b20b2d91-a52a-41be-b210-ca8b6a5709eb/artifacts/bdfccc3f-8bd0-4917-b266-96a5a0ce0b23
• 2.2.2: https://buildkite.com/organizations/grahamc/pipelines/nix-install-matrix/builds/32/jobs/1d2deb87-dd94-427e-b761-4cffa01462b4/artifacts/60d8117e-d878-450f-9af8-685bef65a229