GNOME's tracker is a CPU and privacy hog. There's a pretty good case as to why it's neither useful nor necessary here: http://lduros.net/posts/tracker-sucks-thanks-tracker/
After discovering it chowing 2 cores, I decided to go about disabling it.
Directories
| # unregister broken GHC packages. Run this a few times to resolve dependency rot in installed packages. | |
| # ghc-pkg-clean -f cabal/dev/packages*.conf also works. | |
| function ghc-pkg-clean() { | |
| for p in `ghc-pkg check $* 2>&1 | grep problems | awk '{print $6}' | sed -e 's/:$//'` | |
| do | |
| echo unregistering $p; ghc-pkg $* unregister $p | |
| done | |
| } | |
| # remove all installed GHC/cabal packages, leaving ~/.cabal binaries and docs in place. |
| Use folowing steps to repackage dep package: | |
| 1: Extract deb package | |
| # dpkg-deb -x <package.deb> <dir> | |
| 2: Extract control-information from a package | |
| # dpkg-deb -e <package.deb> <dir/DEBIAN> | |
| 3. After completed to make changes to the package, repack the deb | |
| # dpkg-deb -b <dir> <new-package.deb> |