octs.cc:125:72: error: no member named 'prior' in namespace 'boost'
        for (std::vector<scorenode>::const_iterator i(arr.begin()), ie(boost::prior(arr.end())); i != arr.end(); ++i) {
                                                                       ~~~~~~~^
octs.cc:129:40: error: no member named 'next' in namespace 'boost'; did you mean 'std::next'?
          mx += octchange(i, (i == ie ? n2 : *boost::next(i)->node), n2) * i->dist;
                                              ^~~~~~~~~~~
                                              std::next
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/iterator:620:1: note: 'std::next' declared here
next(_InputIter __x,
^
2 errors generated.

(
a = 12.collect({|i|
  ( 'midinote': (
      (63 + rrand(-6,6.5) + [0,8,13]) ++
      (60 + rrand(-6,6.5) + [0,5,6,9]) ),
    'dur': 1 )
});

f = Fomus();
f.lilyPath  = "/opt/homebrew/bin/lilypond";
f.lilyViewPath = "/opt/homebrew/bin/xpdf";
f.fileName = "~/SCFomus_".standardizePath;
f.add(a);
f.ly;
)

(
a = 12.collect({|i|
  ( 'midinote': (
      (63 + rrand(-6,6.5) + [0,8,13]) ++
      (60 + rrand(-6,6.5) + [0,5,6,9]) ),
    'dur': 1 )
});

f = Fomus()
.lilyPath_("/opt/homebrew/bin/lilypond")
.lilyViewPath_("/opt/homebrew/bin/xpdf")
.fileName_("~/SCFomus_".standardizePath)
.add(a)
.ly;
)

Last login: Sat Jun 24 08:53:57 on ttys000
/Users/prko/Library/Application\ Support/SuperCollider/tmp/SCStringForTerminal-1126564853.command ; exit;
(base) prko@prkoMBP2021 ~ % /Users/prko/Library/Application\ Support/SuperCollider/tmp/SCStringForTerminal-1126564853.command ; exit;
/Users/prko/Library/Application Support/SuperCollider/tmp/SCStringForTerminal-1126564853.command: line 2: fomus: command not found

Saving session...
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...saving history...truncating history files...
...completed.

[Process completed]