/usr/ is in libghc-wai-websockets-prof 3.0.1.1-3build6.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/haskell-packages/
/usr/lib/haskell-packages/ghc/
/usr/lib/haskell-packages/ghc/lib/
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.2/
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.2/wai-websockets-3.0.1.1-LNMQAFHblLMLNQbmyC1tcK//
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.2/wai-websockets-3.0.1.1-LNMQAFHblLMLNQbmyC1tcK/Network//
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.2/wai-websockets-3.0.1.1-LNMQAFHblLMLNQbmyC1tcK/Network/Wai//
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.2/wai-websockets-3.0.1.1-LNMQAFHblLMLNQbmyC1tcK/Network/Wai/Handler//
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.2/wai-websockets-3.0.1.1-LNMQAFHblLMLNQbmyC1tcK/Network/Wai/Handler/WebSockets.p_hi
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.2/wai-websockets-3.0.1.1-LNMQAFHblLMLNQbmyC1tcK/libHSwai-websockets-3.0.1.1-LNMQAFHblLMLNQbmyC1tcK_p.a
/usr/share/
/usr/share/doc/
/usr/share/doc/libghc-wai-websockets-prof/
/usr/share/doc/libghc-wai-websockets-prof/copyright
/usr/share/doc/libghc-wai-websockets-prof/changelog.Debian.gz