diff --git a/devenv/main.py b/devenv/main.py
index 32db0da5..c136ae8d 100644
--- a/devenv/main.py
+++ b/devenv/main.py
@@ -2,6 +2,8 @@
 
 import argparse
 import os
+import subprocess
+import sys
 from collections.abc import Sequence
 
 from devenv import bootstrap
@@ -75,17 +77,77 @@ def devenv(argv: Sequence[str], config_path: str) -> ExitCode:
 
 
 def main() -> ExitCode:
-    import sys
+    # this is also used to see if we're the child process
+    script_logfile = os.environ.get("SCRIPT")
+
+    if script_logfile:
+        return devenv(sys.argv, f"{home}/.config/sentry-devenv/config.ini")
+
+    import tempfile
+
+    _, fp = tempfile.mkstemp()
+    # script (macos/linux) runs the subcommand with a tty, and tees the output to a file.
+    # this way we can very easily capture all output from devenv and send it
+    # to sentry as an attachment if an error occurs.
+    cmd = ("/usr/bin/script", "-qe", fp, *sys.argv)
+
     import sentry_sdk
+    from sentry_sdk.scope import Scope
 
     sentry_sdk.init(
         # https://sentry.sentry.io/settings/projects/sentry-dev-env/keys/
         dsn="https://9bdb053cb8274ea69231834d1edeec4c@o1.ingest.sentry.io/5723503",
-        # enable performance monitoring
         enable_tracing=True,
     )
 
-    return devenv(sys.argv, f"{home}/.config/sentry-devenv/config.ini")
+    scope = Scope.get_current_scope()
+    root_transaction = scope.start_transaction()
+
+    # the reason we're subprocessing instead of os.execv(cmd[0], cmd)
+    # is that script must exit (so that the complete log file is committed to disk)
+    # before sentry sends the event...
+    with root_transaction.start_child():
+        rc = subprocess.call(cmd)
+
+    if rc == 0:
+        return rc
+
+    #import getpass
+
+    # would really like to be able to set filename to the python exception title
+    # because seeing KeyboardInterrupt vs CalledProcessError is more helpful than
+    # "tmp29387ldf", but see above comment
+    #scope.add_attachment(path=fp)
+    #print(fp)
+
+#    client = Scope.get_client()
+
+    #user = getpass.getuser()
+#    computer = client.options.get("server_name", "unknown")
+
+    # events are grouped under user@computer
+    #scope.fingerprint = [f"{user}@test"]
+
+    breakpoint()
+    event_id = root_transaction.finish()
+
+    # trace
+    # https://sentry.sentry.io/performance/trace/d86e9d23141f41e2b335fc219e82d3e0
+
+    # event id feb696d0c83a44a1a73c69f31f10635e
+    # cant find this anywhere though
+    # this page doesnt load
+    # https://sentry.sentry.io/issues/5504551756/events/feb696d0c83a44a1a73c69f31f10635e/?project=5723503
+
+    # https://sentry.sentry.io/traces/?project=5723503&query=project%3Asentry-dev-env&statsPeriod=24h
+    # trace overview
+
+    # so i dont think an issue is being created, despite an event being created
+
+    print("trace id: ", root_transaction.trace_id)
+    print(event_id)
+
+    return rc
 
 
 if __name__ == "__main__":