Use the "during" macro

src/uri_runner.nim

@@ -14,7 +14,6 @@ bootDataspace("main") do (root: Ref; turn: var Turn):
   connectStdio(root, turn)
 
   onPublish(turn, root, ?ActionHandler) do (pat: string; cmd: seq[Assertion]):
-    # TODO: during
     if cmd.len < 2:
       stderr.writeLine "ignoring ", $cmd, " for ", pat
     else:
@@ -24,7 +23,7 @@ bootDataspace("main") do (root: Ref; turn: var Turn):
       else:
         stderr.writeLine "not a valid program specification: ", cmd[0]
 
-  onPublish(turn, root, ?ListenOn[Ref]) do (a: Assertion):
+  during(turn, root, ?ListenOn[Ref]) do (a: Assertion):
     let ds = unembed a
     onMessage(turn, ds, ?XdgOpen) do (uris: seq[string]):
       while children.len > 0 and not children.peekFirst.running:
@@ -52,5 +51,9 @@ bootDataspace("main") do (root: Ref; turn: var Turn):
             children.addLast child
         if not matched:
           stderr.writeLine "no actions matched for ", uri
+  do:
+    # The Syndicate server retracts all assertions when
+    # the config is rewritten.
+    actions.setLen 0
 
 runForever()

src/xdg_open.nim

@@ -15,10 +15,8 @@ proc mintCap: SturdyRef =
   var key: array[16, byte]
   mint(key, "syndicate")
 
-bootDataspace("main") do (ds: Ref; turn: var Turn):
-  let mainFacet = turn.facet
-  connectUnix(turn, unixSocketPath(), mintCap()) do (turn: var Turn; a: Assertion) -> TurnAction:
-    let ds = unembed a
+bootDataspace("main") do (root: Ref; turn: var Turn):
+  connectUnix(turn, unixSocketPath(), mintCap()) do (turn: var Turn; ds: Ref):
     message(turn, ds, XdgOpen(uris: commandLineParams()))
 
 for i in 0..7: poll(20)

xdg_open_ng.nimble

@@ -1,6 +1,6 @@
 # Package
 
-version       = "0.3.0"
+version       = "0.3.1"
 author        = "Emery"
 description   = "A better xdg-open"
 license       = "Unlicense"
@@ -10,4 +10,4 @@ bin           = @[ "uri_runner", "xdg_open"]
 
 # Dependencies
 
-requires "nim >= 1.6.4", "syndicate"
+requires "nim >= 1.6.4", "syndicate >= 1.3.0"