Is there a way of limiting the number of concurrent processes when doing alr install?

[fatso83]

When building the libadalang_tools create I saw that I nearly maxed out my 12GB of RAM and 4GB of swap, so I had to add some additional gigs of swap to avoid the same OOM issue that caused me issues when building the ALS. That last issue made me aware of the -J switch for gprbuild, to limit the number of processes:

  -j<num>    Use <num> processes to compile, bind, and link
  -jc<num>    Use <num> processes to compile
  -jb<num>    Use <num> processes to bind
  -jl<num>    Use <num> processes to link

Some searching made me find the option of adding -- to pass options to gprbuild when doing alr build. alr build -- -J4 should limit the number of processes to 4, AFAIK, but is it possible to achieve the same when doing alr install some_exe? Maybe it could be a global setting one could set or an environment variable?