The OCaml Planet

The opam2web image for opam.ocaml.org is huge weighing in at more than 25 GB. The bulk of this data is opam archives, which are updated and copied into a stock caddy image.

I have previously written about using a topological sort of a directed acyclic graph (DAG) of package dependencies to create an ordered list of installation operations. I now want to create a transitive reduction, giving a graph with the same vertices and the fewest number of edges possible.

While comfort-watching the indomitable Joan Hickson as Agatha Christie’s Miss Marple in The Body in the Library, it occurred to me that Miss Marple would have been a formidable debugger. Since returning from holiday one, two, three weeks ago, I’ve been mostly straightening out and finalising the final Relocatable OCaml PR. A frustrating task, because I know these things will take weeks and have little to show for at the end, so one spends the entire time feeling it should be finished by now. It’s just about there, when this little testsuite failure popped up:

@mseri raised issue #175 as the macOS workers cannot find the most basic C++ headers. I easily eliminated Obuilder, as opam install mccs.1.1+19 didn’t work on the macOS workers natively.

Discover the work that went into improving OCaml debugging for macOS including frame pointers, CFI fixes and CI improvements.

Most of the time, you don’t think about how your file is linked. We’ve come to love dynamically linked files with their small file sizes and reduced memory requirements, but there are times when the convenience of a single binary download from a GitHub release page is really what you need.