Similar to https://ask.clojure.org/index.php/11509/clojure-launch-doesnt-consume-inputstream-process-terminating
tools.build.api/process hangs when ignoring output and the process has large output. Here is curl downloading and printing 1mb of text:
$ clj -Sdeps '{:deps {io.github.clojure/tools.build {:git/tag "v0.7.5" :git/sha "34727f7"}}}'
Clojure 1.11.0-alpha3
user=> (require '[clojure.tools.build.api :as tb])
user=> (tb/process {:command-args ["curl" "https://gist.githubusercontent.com/khaykov/a6105154becce4c0530da38e723c2330/raw/41ab415ac41c93a198f7da5b47d604956157c5c3/gistfile1.txt"] :out :ignore})
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
I think instead of using PIPE, the ignore option should be using DISCARD:
https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/ProcessBuilder.Redirect.html#DISCARD
One caveat: DISCARD is only available on Java 9 and newer. We could do resolve in a try/catch on the top level to see if DISCARD is available and then use that, if available and fall back on PIPE if it isn't. Alternatively, use a thread to consume output while the process is running or redirect to a temporary file.
I'll provide a patch, if desired, and when agreed upon the direction of the solution.
