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by jamamp 1293 days ago
Not only that but here is some of my output:

    $ otool -L AdventOfCode2022
    AdventOfCode2022:
        /usr/lib/libobjc.A.dylib (compatibility version 1.0.0, current version 228.0.0)
        /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1319.0.0)
        /usr/lib/swift/libswiftCore.dylib (compatibility version 1.0.0, current version 5.7.1)
        /usr/lib/swift/libswiftCoreFoundation.dylib (compatibility version 1.0.0, current version 120.100.0, weak)
        /usr/lib/swift/libswiftDarwin.dylib (compatibility version 1.0.0, current version 0.0.0, weak)
        /usr/lib/swift/libswiftDispatch.dylib (compatibility version 1.0.0, current version 17.0.0, weak)
        /usr/lib/swift/libswiftIOKit.dylib (compatibility version 1.0.0, current version 1.0.0, weak)
        /usr/lib/swift/libswiftObjectiveC.dylib (compatibility version 1.0.0, current version 6.0.0, weak)
        /usr/lib/swift/libswiftXPC.dylib (compatibility version 1.0.0, current version 6.0.0, weak)
        /usr/lib/swift/libswiftFoundation.dylib (compatibility version 1.0.0, current version 1.0.0, weak)
Not only does it say that libswiftcore is 5.7.1, but that /usr/lib/swift folder doesn't have any of those files there. Very very confusing. I don't like any of this.

I appreciate your write-up and research into all of this though! I tried googling for what runtime version of Swift is installed in Monterey and couldn't find anything. This is incredibly opaque.
1 comments
js2 1293 days ago
Use DYLD_LIBRARY_PATH and DYLD_PRINT_LIBRARIES when running the compiled binary to see what's actually being loaded. It doesn't appear that DYLD_LIBRARY_PATH influences the output of otool -L.

I wasn't able to get `swift repl` to use anything but the system runtime, maybe because it's signed. Maybe it can be made to work by stripping the out the signing but to be quite honest, I'm done with this at this point.

I've been happily using Python to solve AoC. Y'all gluttons for punishment doing this in Swift:

    def part2():
        total = 0
        group = []
        for line in INPUT.splitlines():
            group.append(line.strip())
            if len(group) < 3:
                continue
            common = list(set(group[0]) & set(group[1]) & set(group[2]))
            group = []
            assert len(common) == 1
            c = common[0]
            p = ascii_letters.index(c) + 1
            # print(c, p)
            total += p
        print(total)
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