make generate can not be run more than once

[jbw976]

What happened?

Running make generate more than once results in the following error:

20:50:21 [ .. ] patching generated CRDs
mkdir: /Users/jared/dev/go/src/github.com/crossplane/crossplane/.work/patch: File exists
make[1]: *** [crds.patch] Error 1
make: *** [generate] Error 2

This also leaves a side effect of the cluster/crds/pkg.crossplane.io_deploymentruntimeconfigs.yaml file being modified with the following diff:

diff --git a/cluster/crds/pkg.crossplane.io_deploymentruntimeconfigs.yaml b/cluster/crds/pkg.crossplane.io_deploymentruntimeconfigs.yaml
index 35a599ab7..f876d0e55 100644
--- a/cluster/crds/pkg.crossplane.io_deploymentruntimeconfigs.yaml
+++ b/cluster/crds/pkg.crossplane.io_deploymentruntimeconfigs.yaml
@@ -4211,8 +4211,6 @@ spec:
                                     ip:
                                       description: IP address of the host file entry.
                                       type: string
-                                  required:
-                                  - ip
                                   type: object
                                 type: array
                                 x-kubernetes-list-map-keys:
@@ -4267,8 +4265,6 @@ spec:
                                         More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names
                                         TODO: Add other useful fields. apiVersion, kind, uid?
                                       type: string
-                                  required:
-                                  - name
                                   type: object
                                   x-kubernetes-map-type: atomic
                                 type: array

This looks related to recently added build logic in 355ba7a

How can we reproduce it?

Run make generate two times in a row.

Workaround: rm -fr .work/patch and then run make generate again.

What environment did it happen in?

Crossplane version: v1.17.0-rc.0.120.g914b83a3c, corresponding to 914b83a