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Joseph Ferano e9c0e96a9b (agent/start) takes no argument, and takes the socket away after itself 
The path was ceremony. Under [flan dev] the daemon already decides where it
wants to talk to the program and writes it into FLAN_AGENT_SOCKET, which the
C side has always honoured over whatever the source named — so the argument
was a value nothing read. Outside the daemon any path will do as long as the
program says which one it picked.

So [start] becomes a macro over two functions: no argument picks the
daemon's socket if there is one and otherwise /tmp/flan-agent-<pid>-<clock>.sock,
announced on stderr because a socket nobody can name is a socket nobody can
connect to. The explicit form stays for a program that wants a fixed path.
Extra arguments are spliced into [start-at] rather than dropped, so the arity
refusal is still the checker's, at the call site.

And the socket is removed on the way out. The bind stashes the path it bound
and registers an atexit; the two paths that leave by _exit — the break loop's
[abort] and the orphan handler — unlink it by hand, as the orphan handler
already did for its own copy of the path. Nothing else takes it away: under
the daemon it sits in a temp directory that is still never removed (FIX.org),
and outside there is no daemon at all.

test/programs/dev-loop.flan now names no socket, which puts the whole daemon
block in test_dev.ml behind the zero-argument form; agent-auto.flan is the
standalone half, reached only through the line the program printed, and it
pins the second (agent/start) as a no-op and the socket as gone at exit.
2026-09-20 19:44:34 +07:00
..
assets
defjson, which shares the design and not a line of the code
2026-09-19 06:41:57 +07:00
pkgs
A macro's parameter list, and one grammar for it
2026-09-20 18:18:24 +07:00
agent-auto.flan
(agent/start) takes no argument, and takes the socket away after itself
2026-09-20 19:44:34 +07:00
agent-longname.flan
Sweep every field label from the colon spelling to the dot
2026-09-12 14:47:54 +07:00
agent-queue.flan
Two of the four buffers with no evidence now have some
2026-09-12 10:47:41 +07:00
agent.flan
Retire the per-type printers, since print says all of it
2026-09-12 05:32:25 +07:00
algorithms.flan
The ! suffix retires: a mutator is named for what it does, not marked
2026-09-19 05:21:02 +07:00
allocators.flan
Allocator is a builtin opaque type, so the arena needs nothing from milestone 5
2026-09-12 10:55:18 +07:00
arena-region.flan
The refusal was about teardown, and a region has none
2026-09-17 20:37:08 +07:00
arena-value.flan
The refusal was about teardown, and a region has none
2026-09-17 20:37:08 +07:00
arith-condition.flan
A divide by zero names the file and the line, and is answerable
2026-09-13 22:55:26 +07:00
arith.flan
The two cases that would have passed while being wrong
2026-09-13 23:09:08 +07:00
array-ctor.flan
A let binding has no type slot, so (array 4 T) is how you say it
2026-09-12 21:48:08 +07:00
bounds-condition.flan
Every citation of a moved document now resolves from where it is written
2026-09-14 07:12:27 +07:00
bounds.flan
A reversed slice is not a slice, in every build
2026-09-18 07:36:21 +07:00
break.flan
Sweep every field label from the colon spelling to the dot
2026-09-12 14:47:54 +07:00
bytes2.flan
Every defn in the tree states its return type, and Unit is written ()
2026-09-12 23:06:40 +07:00
cleanup.flan
Every defn in the tree states its return type, and Unit is written ()
2026-09-12 23:06:40 +07:00
conditions.flan
The return type stops being a guess: the slot is mandatory, unit is ()
2026-09-12 23:18:28 +07:00
datas.flan
The tagged sum is defdata, and the old spelling is an error by name
2026-09-17 19:03:27 +07:00
debug-permuted.flan
Sweep every field label from the colon spelling to the dot
2026-09-12 14:47:54 +07:00
debug.flan
Sweep every field label from the colon spelling to the dot
2026-09-12 14:47:54 +07:00
defer-let.flan
Every defn in the tree states its return type, and Unit is written ()
2026-09-12 23:06:40 +07:00
defvar-dyn.flan
A defvar's third element decides: a type is the static, anything else is dyn
2026-09-20 15:00:15 +07:00
destructure.flan
Six dogfooding items: empty bodies, comment, inc/dec, () bodies, type limits, {.field}
2026-09-20 18:02:59 +07:00
dev-break-bounds.flan
Every citation of a moved document now resolves from where it is written
2026-09-14 07:12:27 +07:00
dev-break.flan
Sweep every field label from the colon spelling to the dot
2026-09-12 14:47:54 +07:00
dev-chatty.flan
A program that prints is not a program that stopped polling
2026-09-18 07:31:25 +07:00
dev-class.flan
A method added to a running program, proved end to end
2026-09-20 15:36:13 +07:00
dev-dyn-global.flan
The park kept the frames' roots off and the globals' on
2026-09-20 11:06:14 +07:00
dev-globals.flan
The globals a stopped stack reaches, in one section and not under a frame
2026-09-12 16:22:58 +07:00
dev-inspect.flan
The tagged sum is defdata, and the old spelling is an error by name
2026-09-17 19:03:27 +07:00
dev-lateagent.flan
The wait for the agent socket was in front of the accept loop
2026-09-20 18:11:32 +07:00
dev-locals.flan
Sweep every field label from the colon spelling to the dot
2026-09-12 14:47:54 +07:00
dev-loop.flan
(agent/start) takes no argument, and takes the socket away after itself
2026-09-20 19:44:34 +07:00
dev-macro.flan
A macro module keeps its own prelude, and --x86 gets the merged daemon
2026-09-17 19:50:29 +07:00
dev-noagent.flan
Memcheck is told an arena reset happened, and the agentless session is pinned
2026-09-13 17:55:00 +07:00
dev-parknote.flan
The park left for a re-run without draining its ring
2026-09-20 18:32:01 +07:00
dev-pause.flan
A pause is waited for by name, and a build is not a socket
2026-09-13 13:07:25 +07:00
dev-ptr.flan
An address answers with a type, and a killed program is asked rather than hooked
2026-09-13 15:27:31 +07:00
dev-repl.flan
A socket file must not outlive the process that bound it
2026-09-14 08:11:35 +07:00
dev-rerun.flan
A three-element defvar reads its third element: a type is zeroed static, anything else is dyn
2026-09-20 15:14:56 +07:00
dev-robust.flan
A failed build is a refusal, and a refusal leaves the session standing
2026-09-13 19:43:18 +07:00
dev-trap-free-all.flan
A trap with no channel stops the program, not the session
2026-09-18 13:47:42 +07:00
dev-trap-null-alloc.flan
A trap with no channel stops the program, not the session
2026-09-18 13:47:42 +07:00
dev-watch.flan
A hot loop keeps five numbers, and the window is the editor's
2026-09-13 10:35:20 +07:00
dyn-basic.flan
One unannotated add, answering 5 to the integers and 3.75 to the floats
2026-09-19 05:55:48 +07:00
dyn-boundary.flan
--no-gc is a pass, not a flag the emitter can see
2026-09-19 06:33:28 +07:00
dyn-cast.flan
The corpus program for a cast that opens a box
2026-09-20 13:54:07 +07:00
dyn-class.flan
A method's parameter names are bound in parallel, not in sequence
2026-09-20 15:36:27 +07:00
dyn-defer.flan
Four dyn values in a defer the collector had never been told about
2026-09-19 06:40:53 +07:00
dyn-global.flan
Roots, pushed where the addresses are stable and popped where the frame leaves
2026-09-19 06:12:41 +07:00
dyn-host.flan
A value carries its own type, and the heap under it collects
2026-09-19 05:52:47 +07:00
dyn-if-truthy.flan
and hands back its deciding operand too, and both locs get sharper
2026-09-20 10:36:05 +07:00
dyn-map.flan
Dyn maps, keywords and nil land: milestone 2's first item
2026-09-19 19:44:56 +07:00
dyn-struct.flan
Five back from review, and the first one was the mangle eating a type
2026-09-19 22:53:16 +07:00
dyn-trap-site.flan
The review's fixes: a suggestion that does not compile, and a confident wrong guess
2026-09-20 18:46:48 +07:00
dyn-vec.flan
A container holding an integer, a float, a string and a boolean at once
2026-09-19 06:06:44 +07:00
dyn-view.flan
A slice level after the first index was invisible to the lifetime rule
2026-09-20 10:51:22 +07:00
edn-provide.flan
A file that does not parse says so, and the provider is written down
2026-09-19 06:59:22 +07:00
edn-read.flan
Dyn maps, keywords and nil land: milestone 2's first item
2026-09-19 19:44:56 +07:00
edn.flan
Sets are read, and the reader that answers a Value is the package's
2026-09-18 22:50:54 +07:00
embed.flan
Assets are baked in at compile time, one file or one whole directory
2026-09-12 11:36:01 +07:00
enum-compare.flan
Sweep every field label from the colon spelling to the dot
2026-09-12 14:47:54 +07:00
enum-convert.flan
An enum and an integer convert, both ways, when you say so
2026-09-12 09:11:34 +07:00
error.flan
Sweep every field label from the colon spelling to the dot
2026-09-12 14:47:54 +07:00
exhausted-unhandled.flan
(Vec T) over a type-erased runtime, with StorageExhausted going in beside it
2026-09-12 11:07:57 +07:00
exhausted.flan
The return type stops being a guess: the slot is mandatory, unit is ()
2026-09-12 23:18:28 +07:00
files.flan
Files beyond slurp and barf, split by whether a handler could act
2026-09-17 22:04:48 +07:00
fill.flan
sentinel-filled is now dead-beef, and takes the pattern
2026-09-20 18:33:05 +07:00
fn-capture.flan
A bare name is the function, and capture is the part that is not built
2026-09-12 22:44:33 +07:00
fn-extern.flan
A bare name is the function, and capture is the part that is not built
2026-09-12 22:44:33 +07:00
fn-in-struct.flan
A bare name is the function, and capture is the part that is not built
2026-09-12 22:44:33 +07:00
fn-no-type.flan
A bare name is the function, and capture is the part that is not built
2026-09-12 22:44:33 +07:00
fn-values.flan
The ! suffix retires: a mutator is named for what it does, not marked
2026-09-19 05:21:02 +07:00
format.flan
The ! suffix retires: a mutator is named for what it does, not marked
2026-09-19 05:21:02 +07:00
frame-rollback.flan
Every citation of a moved document now resolves from where it is written
2026-09-14 07:12:27 +07:00
free-all-refused.flan
Say what the two one-line refusal programs are refusing, and why
2026-09-12 11:15:58 +07:00
generic-map-reject.flan
The map operations are deferred, and the clause is what pays for it
2026-09-13 15:23:37 +07:00
generic-reject.flan
The prelude's per-type families collapse: 22 functions become 10, 27 become 16
2026-09-13 14:49:11 +07:00
generic-runaway.flan
The move-only concept follows the flow analysis out: everything copies, and the frees are yours
2026-09-18 12:16:05 +07:00
generics.flan
The ! suffix retires: a mutator is named for what it does, not marked
2026-09-19 05:21:02 +07:00
global-init.flan
A global's initialiser may be computed, and both backends run it the same way
2026-09-19 04:24:52 +07:00
handler-case.flan
The survey was counting the defers, not watching them
2026-09-19 21:13:03 +07:00
higher-order.flan
The ! suffix retires: a mutator is named for what it does, not marked
2026-09-19 05:21:02 +07:00
init-conditions.flan
The defer counter costs something on the warm path, and the valgrind row rests on one half
2026-09-19 21:59:11 +07:00
int-float.flan
int and float are the machine types, not a second name for them
2026-09-20 19:09:26 +07:00
into.flan
The two cases the tests did not cover, and one leak of a permission
2026-09-13 09:32:58 +07:00
json-provide.flan
defjson, which shares the design and not a line of the code
2026-09-19 06:41:57 +07:00
json.flan
Dyn maps, keywords and nil land: milestone 2's first item
2026-09-19 19:44:56 +07:00
limits.flan
Six dogfooding items: empty bodies, comment, inc/dec, () bodies, type limits, {.field}
2026-09-20 18:02:59 +07:00
loops.flan
Pin the latch to the continue path, and the clause barrier to its reason
2026-09-12 22:00:13 +07:00
machine.flan
Every defn in the tree states its return type, and Unit is written ()
2026-09-12 23:06:40 +07:00
macro-arity-extra.flan
A macro's parameter list, and one grammar for it
2026-09-20 18:18:24 +07:00
macro-arity.flan
A macro's parameter list, and one grammar for it
2026-09-20 18:18:24 +07:00
macro-cycle.flan
A macro's parameter list, and one grammar for it
2026-09-20 18:18:24 +07:00
macro-destructure-arity.flan
A macro's parameter list, and one grammar for it
2026-09-20 18:18:24 +07:00
macro-destructure.flan
A macro's parameter list, and one grammar for it
2026-09-20 18:18:24 +07:00
macro-params.flan
A macro's parameter list, and one grammar for it
2026-09-20 18:18:24 +07:00
macro-spin.flan
A macro's parameter list, and one grammar for it
2026-09-20 18:18:24 +07:00
macro-unless.flan
The return type stops being a guess: the slot is mandatory, unit is ()
2026-09-12 23:18:28 +07:00
macros.flan
macros.flan says which of the two spellings it is
2026-09-20 18:23:22 +07:00
map-exhausted.flan
The return type stops being a guess: the slot is mandatory, unit is ()
2026-09-12 23:18:28 +07:00
map-iter.flan
The ! suffix retires: a mutator is named for what it does, not marked
2026-09-19 05:21:02 +07:00
map-remove.flan
The ! suffix retires: a mutator is named for what it does, not marked
2026-09-19 05:21:02 +07:00
map-stale-region.flan
The Map's tests join the suite, and the epoch trap covers its half
2026-09-12 16:09:27 +07:00
maps.flan
Cover a dev build and a map that leaves its let
2026-09-12 16:34:25 +07:00
math2.flan
Every defn in the tree states its return type, and Unit is written ()
2026-09-12 23:06:40 +07:00
math3.flan
The init-once flag moves out of the namespace a program can write
2026-09-20 13:07:09 +07:00
math.flan
Every defn in the tree states its return type, and Unit is written ()
2026-09-12 23:06:40 +07:00
nil-option.flan
nil <-> None at (Option T) boundaries, and (Some nil) unconstructible — M2 queue item 4
2026-09-20 07:20:27 +07:00
nth-gone.flan
Remove nth, the alias that was not one
2026-09-12 04:46:41 +07:00
pkg-alias-clash.flan
A ring of imports is refused by name, not swallowed
2026-09-12 16:46:30 +07:00
pkg-cycle.flan
A ring of imports is refused by name, not swallowed
2026-09-12 16:46:30 +07:00
pkg-data.flan
Sets are read, and the reader that answers a Value is the package's
2026-09-18 22:50:54 +07:00
pkg-diamond.flan
A ring of imports is refused by name, not swallowed
2026-09-12 16:46:30 +07:00
pkg-hidden-main.flan
sand is one program again
2026-09-11 20:11:01 +07:00
pkg-macro-bare.flan
Macros come from a package now, and the refusal's reason was wrong
2026-09-13 15:40:08 +07:00
pkg-macro-idle.flan
C-x C-e expands, and a declaration is not an expression
2026-09-13 17:54:36 +07:00
pkg-macro-ring.flan
Macros come from a package now, and the refusal's reason was wrong
2026-09-13 15:40:08 +07:00
pkg-macro-spin.flan
Macros come from a package now, and the refusal's reason was wrong
2026-09-13 15:40:08 +07:00
pkg-macro.flan
A macro's parameter list, and one grammar for it
2026-09-20 18:18:24 +07:00
pkg-return.flan
Sweep every field label from the colon spelling to the dot
2026-09-12 14:47:54 +07:00
pkg-shadow.flan
A local shadowing an imported name, in an expression and in a place
2026-09-12 10:40:47 +07:00
pkg-shared.flan
Retire the per-type printers, since print says all of it
2026-09-12 05:32:25 +07:00
pkg-two-aliases.flan
sand is one program again
2026-09-11 20:11:01 +07:00
pkg-two-mains.flan
sand is one program again
2026-09-11 20:11:01 +07:00
pkg-unused.flan
Retire the per-type printers, since print says all of it
2026-09-12 05:32:25 +07:00
prelude-macros.flan
Six dogfooding items: empty bodies, comment, inc/dec, () bodies, type limits, {.field}
2026-09-20 18:02:59 +07:00
printers.flan
A macro's parameter list, and one grammar for it
2026-09-20 18:18:24 +07:00
println.flan
The return type stops being a guess: the slot is mandatory, unit is ()
2026-09-12 23:18:28 +07:00
raylib-audio.flan
Every defn in the tree states its return type, and Unit is written ()
2026-09-12 23:06:40 +07:00
raylib-codepoints.flan
Both raylib workarounds, and where the second one went instead
2026-09-14 08:37:30 +07:00
raylib-ffi.flan
The renderer was one binding away, and the import was not allowed to be the answer
2026-09-13 07:50:03 +07:00
raylib-font.flan
Every defn in the tree states its return type, and Unit is written ()
2026-09-12 23:06:40 +07:00
raylib-image-processing.flan
Nine filters that rewrite the buffer they are handed, and the half of them a headless run can pin
2026-09-13 23:22:37 +07:00
raylib-image.flan
The renderer was one binding away, and the import was not allowed to be the answer
2026-09-13 07:50:03 +07:00
raylib-imported.flan
A table for the importer, against a header that does not move
2026-09-12 16:09:48 +07:00
reach-walk.flan
The prelude's per-type families collapse: 22 functions become 10, 27 become 16
2026-09-13 14:49:11 +07:00
recur.flan
The two cases the tests did not cover, and one leak of a permission
2026-09-13 09:32:58 +07:00
registry.flan
Pool and Handle leave the language: two containers are enough, and a slab is a Vec you free less often
2026-09-18 11:56:22 +07:00
reload-agg-v2.flan
Every citation of a moved document now resolves from where it is written
2026-09-14 07:12:27 +07:00
reload-agg.flan
Every citation of a moved document now resolves from where it is written
2026-09-14 07:12:27 +07:00
reload-generic.flan
The ! suffix retires: a mutator is named for what it does, not marked
2026-09-19 05:21:02 +07:00
reload-v2.flan
A global Vec is borrowed, never moved, and outlives every entry to main
2026-09-17 18:42:01 +07:00
reload-v3.flan
A global Vec is borrowed, never moved, and outlives every entry to main
2026-09-17 18:42:01 +07:00
reload-v4.flan
Retire the per-type printers, since print says all of it
2026-09-12 05:32:25 +07:00
reload-v5.flan
Retyping a global across a reload, which nothing had ever done
2026-09-12 10:51:14 +07:00
reload-v6.flan
A name the host was never built with, compiled by the x86 backend
2026-09-14 10:16:42 +07:00
reload.flan
A global Vec is borrowed, never moved, and outlives every entry to main
2026-09-17 18:42:01 +07:00
reserve-overflow.flan
A byte count that cannot be represented is StorageExhausted, not a smaller block
2026-09-17 21:49:40 +07:00
restarts.flan
Sweep every field label from the colon spelling to the dot
2026-09-12 14:47:54 +07:00
rl-with-empty-arg.flan
Pin the () body guards, the match-arm rule, and correct two comments
2026-09-20 18:18:20 +07:00
rl-with-empty.flan
Pin the () body guards, the match-arm rule, and correct two comments
2026-09-20 18:18:20 +07:00
rl-with-reject.flan
A begin/end pair that cannot come apart, and what it still cannot promise
2026-09-13 18:00:35 +07:00
rl-with.flan
A begin/end pair that cannot come apart, and what it still cannot promise
2026-09-13 18:00:35 +07:00
sand-headless.flan
Retire the per-type printers, since print says all of it
2026-09-12 05:32:25 +07:00
shadow-pkg.flan
A local shadowing an imported name, in an expression and in a place
2026-09-12 10:40:47 +07:00
shim-nul.flan
Four places the runtime answered with something other than the truth
2026-09-17 22:17:19 +07:00
signedness.flan
Retire the per-type printers, since print says all of it
2026-09-12 05:32:25 +07:00
slice-from-ptr.flan
A pointer from C can state its length, and then it is a slice
2026-09-13 17:40:59 +07:00
slices.flan
The ! suffix retires: a mutator is named for what it does, not marked
2026-09-19 05:21:02 +07:00
slurp-unhandled.flan
slurp reads a whole file, barf writes one, and failure is a condition
2026-09-12 11:38:24 +07:00
slurp.flan
slurp reads a whole file, barf writes one, and failure is a condition
2026-09-12 11:38:24 +07:00
some-nil.flan
nil <-> None at (Option T) boundaries, and (Some nil) unconstructible — M2 queue item 4
2026-09-20 07:20:27 +07:00
stale-region.flan
(Vec T) over a type-erased runtime, with StorageExhausted going in beside it
2026-09-12 11:07:57 +07:00
string-eq.flan
The batch from two reviews plus the acceptance exit code, item by item
2026-09-19 21:18:57 +07:00
string-of-bytes.flan
Every defn in the tree states its return type, and Unit is written ()
2026-09-12 23:06:40 +07:00
strings.flan
The ! suffix retires: a mutator is named for what it does, not marked
2026-09-19 05:21:02 +07:00
struct-ergonomics.flan
Two struct spellings the parser was never able to decide
2026-09-20 18:12:45 +07:00
text.flan
The prelude's per-type families collapse: 22 functions become 10, 27 become 16
2026-09-13 14:49:11 +07:00
time.flan
The monotonic origin bound measures the clock, not the machine
2026-09-20 11:53:37 +07:00
two-numbers.flan
A rendered number goes in the caller's frame, not in one buffer for the process
2026-09-17 22:55:30 +07:00
unions.flan
defunion is C's union, and reading the member you did not write is defined
2026-09-17 19:54:32 +07:00
unit-main.flan
The return type stops being a guess: the slot is mandatory, unit is ()
2026-09-12 23:18:28 +07:00
user-allocator.flan
Say what the two one-line refusal programs are refusing, and why
2026-09-12 11:15:58 +07:00
utf8.flan
The ! suffix retires: a mutator is named for what it does, not marked
2026-09-19 05:21:02 +07:00
values.flan
Sweep every field label from the colon spelling to the dot
2026-09-12 14:47:54 +07:00
vec-double-free.flan
(Vec T) over a type-erased runtime, with StorageExhausted going in beside it
2026-09-12 11:07:57 +07:00
vec-global.flan
A global Vec is borrowed, never moved, and outlives every entry to main
2026-09-17 18:42:01 +07:00
vec-in-struct.flan
The move-only concept follows the flow analysis out: everything copies, and the frees are yours
2026-09-18 12:16:05 +07:00
vec-moved-in-loop.flan
(Vec T) over a type-erased runtime, with StorageExhausted going in beside it
2026-09-12 11:07:57 +07:00
vec-moved.flan
(Vec T) over a type-erased runtime, with StorageExhausted going in beside it
2026-09-12 11:07:57 +07:00
vec-to-c.flan
Ownership is not transitive yet, so refuse the three shapes that assume it is
2026-09-12 11:12:49 +07:00
vec-untyped.flan
(Vec T) over a type-erased runtime, with StorageExhausted going in beside it
2026-09-12 11:07:57 +07:00
vec.flan
Sweep every field label from the colon spelling to the dot
2026-09-12 14:47:54 +07:00
virtual-controls-headless.flan
Sweep every field label from the colon spelling to the dot
2026-09-12 14:47:54 +07:00
web-files.flan
One source, two outcomes: barf is refused on the web and says so
2026-09-12 11:41:24 +07:00