Comment 8 for bug 2033287

I don't think I expressed myself clearly.

What I'm saying is that we use different hosts to bootstrap SBCL, and it is possible, since that's one of the things we check doesn't regress. I was going to merge your patches as is on master because they look good but the CI on github.com/sbcl/sbcl won't pass if this isn't fixed, as CLISP, CCL, and CMU CL are all tested as bootstrap hosts. You can build with any of these via ./make.sh clisp or ./make.sh ccl. The fix is fairly simple: Don't add any references to sb-ext: (or guard with #+sbcl).

One of the goals of SBCL is that it can be bootstrapped from other build hosts, not just from SBCL.