Add App bundle and wrappers to enable better system integration

[bjeurissen]

Similar to the standalone installer could we add OS integration into to the homebrew formula?

The following layout seems to accomplish this:

➜  bin git:(master) pwd            
/opt/homebrew/opt/mrtrix3/bin

Replace mrview binary with wrapper:

➜  bin git:(master) cat mrview                      
#!/bin/bash
f="${BASH_SOURCE}"
while [[ -L "${f}" ]]; do
 f2="$(readlink "${f}")"
 if [[ "${f2}" = /* ]]; then f="${f2}"; else f="$(dirname "${f}")/${f2}"; fi
done
f=$(dirname "${f}")
"${f}"/MRView.app/Contents/MacOS/mrview "$@"

Replace shview binary with wrapper:

➜  bin git:(master) cat shview
#!/bin/bash
f="${BASH_SOURCE}"
while [[ -L "${f}" ]]; do
 f2="$(readlink "${f}")"
 if [[ "${f2}" = /* ]]; then f="${f2}"; else f="$(dirname "${f}")/${f2}"; fi
done
f=$(dirname "${f}")
"${f}"/SHView.app/Contents/MacOS/shview "$@"

Move mrview into MRview.app application bundle:

➜  bin git:(master) tree MRView.app
MRView.app
└── Contents
    ├── Info.plist
    ├── MacOS
    │   └── mrview --> actual mrview binary moved here
    ├── Resources
    │   ├── mrview.icns
    │   └── mrview_doc.icns
    └── lib -> ../../../lib

4 directories, 4 files

Move shview into SHView.app application bundle:

➜  bin git:(master) tree SHView.app
SHView.app
└── Contents
    ├── Info.plist
    ├── MacOS
    │   └── shview --> actual shview binary moved here
    ├── Resources -> ../../MRView.app/Contents/Resources
    └── lib -> ../../../lib

4 directories, 2 files

I first installed mrview using homebrew and then made these changes manually.

Would this be technically feasible within the formula?
Would this be desirable?

[bjeurissen]

I added support for Application bundles to the MRtrix3 ./build script in this branch.

This way the standalone, homebrew, anaconda, and compilation from scratch installation approaches can all reuse it.

Is this something that people would be happy with?