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I'm trying to deploy a Rails app using capistrano. The deployment script, initiated by cap production deploy runs fine, until this command:

$HOME/.rbenv/bin/rbenv exec bundle install --path /home/deploy/app/shared/bundle --jobs 4 --without development test --deployment --debug --backtrace --quiet

I ssh'd into the server and run the same command, but replaced the --quiet flag with --verbose, and see the bundle is frozen on sassc installation:

Using activestorage 6.0.3.2
Using actionmailbox 6.0.3.2
Using webpacker 4.2.2
Using actiontext 6.0.3.2
Using rails 6.0.3.2
Installing sassc 2.4.0 with native extensions

From my extensive research, I understand that installing with native extensions may take very long, but no matter how long I let it run, nothing happens. I've manually installed the gem in verbose mode after leaving it running all night, and it appeared to have succeeded:

compiling ./libsass/src/position.cpp
compiling ./libsass/src/prelexer.cpp
compiling ./libsass/src/remove_placeholders.cpp
compiling ./libsass/src/sass.cpp
compiling ./libsass/src/sass2scss.cpp
compiling ./libsass/src/sass_context.cpp
compiling ./libsass/src/sass_functions.cpp
compiling ./libsass/src/sass_values.cpp
compiling ./libsass/src/source.cpp
compiling ./libsass/src/source_map.cpp
compiling ./libsass/src/stylesheet.cpp
compiling ./libsass/src/to_value.cpp
compiling ./libsass/src/units.cpp
compiling ./libsass/src/utf8_string.cpp
compiling ./libsass/src/util.cpp
compiling ./libsass/src/util_string.cpp
compiling ./libsass/src/values.cpp
linking shared-object sassc/libsass.so
current directory: /home/deploy/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/sassc-2.4.0/ext
"make \"DESTDIR=\" install"
/usr/bin/install -c -m 0755 libsass.so ./.gem.20200720-1092-b4v9ch/sassc
current directory: /home/deploy/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/sassc-2.4.0/ext
/home/deploy/.rbenv/versions/2.6.3/bin/ruby -I /home/deploy/.rbenv/versions/2.6.3/lib/ruby/2.6.0 -r ./siteconf20200720-1092-1xt3w4b.rb extconf.rb
current directory: /home/deploy/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/sassc-2.4.0/ext
make "DESTDIR=" clean
current directory: /home/deploy/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/sassc-2.4.0/ext
make "DESTDIR="
current directory: /home/deploy/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/sassc-2.4.0/ext
make "DESTDIR=" install
Successfully installed sassc-2.4.0
Parsing documentation for sassc-2.4.0
Parsing sources...
100% [261/261]  lib/sassc/version.rb
Done installing documentation for sassc after 1 seconds
1 gem installed

but the deployment still freezes on sassc.

I am deploying on an AWS EC2 instance and noticed all my CPU Credits were depleted after a few hours of letting the deploy script run, so I even turned on unlimited mode to remedy this by paying for the extra CPU cycles. However, I've let the script run for days to no avail. I'm truly at a loss, and this is very frustrating.

Any help would be greatly appreciated.

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  • Well you've got a proper mystery on your hands. That gem shouldn't take more than a couple of minutes to build...on a Raspberry Pi. No need to let it go for days, or even hours. I've been looking at bundle install but I'm not sure how to get it to be any more verbose about what it's doing. Jul 20, 2020 at 16:56
  • Okay, thanks. I've been stumped on this for over a week now, so if you have any ideas please let me know.
    – jacob_g
    Jul 20, 2020 at 18:27

1 Answer 1

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https://github.com/sass/sassc-ruby/issues/189 seems to the culprit. Downgrading to an earlier version might fix this (2.1.0 is suggested).

See also https://github.com/sass/sassc-ruby/issues/204.

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