Joseph Ferano
5f5cc8bee9
No DAP implementation here, and there should not be one. `flan build --debug' puts DWARF in the executable, lldb reads it, lldb-dap speaks the protocol — so what was actually missing was a dape-configs entry that knows to build a .flan file first and where the binary lands. The build goes through dape's own `compile' key rather than a shell-out, so a rejected program lands in a compilation buffer and next-error walks it. Flan's diagnostics are already file:line:col. `flan-debug' goes through `dape--config-eval' and not `alist-get'. `dape' takes a config whose forms are already evaluated — that is what M-x dape does after reading one — and handing it the stored entry would pass the list (flan-dape--binary (flan-dape--source)) to lldb as a program name. Driven headlessly to prove it: a breakpoint set by line in the .flan buffer, hit, reported as flan.tick at debug.flan:19 with c and n in scope. The keybinding is registered from here rather than in flan-mode.el, so this file is the only thing anyone has to load to get it and flan-mode keeps working for someone who never installs dape. The two frictions are written down at the bottom of flan-dape.el from lldb transcripts, not from reasoning about what ought to happen, because the guess I started from was wrong. Across a reload a breakpoint set by *name* gains a second location and both stay live — the old body is still mapped and still what old call sites reach. One set by *file and line* stops firing, and not because dape pinned it to an address: the redefinition module has no line table to resolve against. Given one, lldb does re-resolve on dlopen. Which names the gap: Emit.redefinition takes ~debug and Session.eval does not pass it, so `flan reload' and the `flan dev' daemon build modules without DWARF. lib/session.ml is the dev loop's file, not this lane's. test-flan-dape.el is not in dune test. It wants Emacs, dape, lldb-dap and a built flan at once, and wiring four optional things into the acceptance table would make that table's failures mean less, not more.
