When searching for packages, rule out incompatible TTC versions #1091

Job	Run time
initialise	3s
quick-check	6m 44s
ubuntu-bootstrap-racket	12m 13s
ubuntu-bootstrap-chez	7m 20s
macos-bootstrap-chez	6m 40s
nix-bootstrap-chez	19m 53s
ubuntu-self-host-previous-version	11m 6s
windows-bootstrap-chez	23m 57s
macos-self-host-chez	15m 37s
ubuntu-build-api	4m 17s
ubuntu-self-host-chez	11m 11s
ub-test-frex	3m 57s
ub-test-collie	21s
ub-pack-test-pack	12m 32s
ub-test-elab-util	41s
ub-pack-test-lsp	15m 18s
ub-test-katla-and-html	6m 7s
ubuntu-self-host-racket	0s
windows-self-host-racket	11m 47s
	2h 49m 44s

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