Deno•4y ago•

7 replies

Deno.run Strange Issue

I use

Deno.run

Deno.run

+ stdout/signals/etc a lot, but this behavior is beyond my current debugging abilities

I have a command

nix eval ...

nix eval ...

which works fine in a python subshell, and on the commandline. However, Deno.run with piped stdout makes it hang indefinitely. To be explicit, in this block:

process.status().then(callback).catch(callback)

process.status().then(callback).catch(callback)

the callback doesn't run until a

.kill()

.kill()

is used (SIGHUP/SIGINT/SIGKILL). Tested on Deno 1.29.4 and Deno 1.22.0 for good measure.

What is even more strange is trying to bypass the problem with hackery also fails.
All of these round-about execution methods (translated to Deno.run) also hang indefinitely:

-

bash -c '[command]'

bash -c '[command]'

bash ./file_with_command.sh

bash ./file_with_command.sh

bash -i ./file_with_command.sh

bash -i ./file_with_command.sh

In particular the

bash -i

bash -i

method not only hangs, but also exclusively makes it so that ctrl+C, ctrl+D, and even ctrl+Z are ignored; I have to kill the deno process from another termial.

Env:

bash -c env

bash -c env

prints out the EXACT same env vars for Deno/Python/CLI
Cwd: deno/python/cli all have the same working directory
Interactivity: running it with

deno repl

deno repl

has been the same as

deno run

deno run

Piping:
Manually closing the stdout pipe doesn't work/help.
Removing

stdout: 'piped'

stdout: 'piped'

, makes command not-hang (but defeats the point).
Adding

stderr: 'piped'

stderr: 'piped'

still causes a hang.

I don't even know what else could be possibly causing a difference (Deno & Python code attached as comments)

Deno•4y ago•

7 replies

jeff.hykin

Deno.run Strange Issue

I use

Deno.run

Deno.run

+ stdout/signals/etc a lot, but this behavior is beyond my current debugging abilities

I have a command

nix eval ...

nix eval ...

which works fine in a python subshell, and on the commandline. However, Deno.run with piped stdout makes it hang indefinitely. To be explicit, in this block:

process.status().then(callback).catch(callback)

process.status().then(callback).catch(callback)

the callback doesn't run until a

.kill()

.kill()

bash -c '[command]'

bash -c '[command]'

bash ./file_with_command.sh

bash ./file_with_command.sh

bash -i ./file_with_command.sh

bash -i ./file_with_command.sh

In particular the

bash -i

bash -i

method not only hangs, but also exclusively makes it so that ctrl+C, ctrl+D, and even ctrl+Z are ignored; I have to kill the deno process from another termial.

Env:

bash -c env

bash -c env

prints out the EXACT same env vars for Deno/Python/CLI
Cwd: deno/python/cli all have the same working directory
Interactivity: running it with

deno repl

deno repl

has been the same as

deno run

deno run

Piping:
Manually closing the stdout pipe doesn't work/help.
Removing

stdout: 'piped'

stdout: 'piped'

, makes command not-hang (but defeats the point).
Adding

stderr: 'piped'

stderr: 'piped'

still causes a hang.

I don't even know what else could be possibly causing a difference (Deno & Python code attached as comments)

Deno.run Strange Issue

Similar Threads

Deno.run Strange Issue

Similar Threads

Similar Threads

Similar Threads