Heroku timeout with custom Buildpack -

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i have custom heroku buildpack compiles cmake , opencv. problem is, opencv takes forever compile. i've tried precompiling opencv , pulling in during build; however, have not yet been successful in doing so.

i came across compile_timeout=n env variable can set override 15 minute timeout, it's not working. know if env still supported? or if there approach besides precompiling?

i ideally have flexibility of compiling on fly if update latest version of opencv (compilations cached on heroku i'm not waiting around full build on every deploy).

i think best shot build binaries beforehand. however, heroku still doesn't have great support this.

see these links suggestions:


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