better test

Signed-off-by: Antonio Nuno Monteiro <anmonteiro@gmail.com>

test/blackbox-tests/test-cases/pkg/gh10959.t

@@ -2,53 +2,61 @@ Repro `dune exec --watch` crash with pkg management
 
   $ . ./helpers.sh
 
-  $ cat >dune-project <<EOF
-  > (lang dune 3.13)
-  > (pin
-  >  (url file://$PWD/_multiple)
-  >  (package (name foo))
-  >  (package (name bar)))
-  > (package
-  >  (name main)
-  >  (depends foo bar))
+  $ mkdir external_sources
+  $ cat >external_sources/dune-project <<EOF
+  > (lang dune 3.11)
+  > (package (name mypkg))
   > EOF
-
-  $ cat >dune <<EOF
-  > (executable
-  >  (name x))
+  $ cat >external_sources/dune <<EOF
+  > (library
+  >  (public_name mypkg.lib)
+  >  (name test_lib))
   > EOF
-  $ cat >x.ml <<EOF
-  > let () = print_endline "hello"
+  $ cat >external_sources/test_lib.ml <<EOF
+  > let x = "hello"
+  > EOF
+
+Now we set up a lock file with this package and then attempt to use it:
+
+  $ cat >dune-project <<EOF
+  > (lang dune 3.11)
   > EOF
 
   $ mkdir dune.lock
   $ cat >dune.lock/lock.dune <<EOF
   > (lang package 0.1)
-  > (repositories
-  >  (complete true))
   > EOF
 
-  $ cat >dune.lock/test.pkg <<EOF
+  $ cat >dune.lock/mypkg.pkg <<EOF
   > (version 0.0.1)
+  > (source (copy $PWD/external_sources))
   > (build
-  >  (system "echo building test"))
+  >   (run dune build --release --promote-install-file=true . @install))
+  > EOF
+
+  $ cat >dune <<EOF
+  > (dirs (:standard \ external_sources))
+  > (executable
+  >  (name x)
+  >  (libraries mypkg.lib))
+  > EOF
+
+  $ cat >x.ml <<EOF
+  > let () = print_endline Test_lib.x
   > EOF
 
   $ dune exec -w ./x.exe > output.log 2>&1 &
   $ PID=$!
 
   $ TIME_WAITED=0
-  $ MAX_WAIT_TIME=30
+  $ MAX_WAIT_TIME=20
   $ SLEEP_INTERVAL=1
-  $ while [ $(cat output.log | wc -l) -lt 3 ] && [ "$TIME_WAITED" -lt "$MAX_WAIT_TIME" ]; do
+  $ while [ $(cat output.log | wc -l) -lt 2 ] && [ "$TIME_WAITED" -lt "$MAX_WAIT_TIME" ]; do
   >   sleep 0.1
   >   TIME_WAITED=$((TIME_WAITED + SLEEP_INTERVAL))
   > done
-  $ echo $TIME_WAITED
-  6
 
   $ cat output.log | sort
   Success, waiting for filesystem changes...
-  building test
   hello
   $ kill $PID