Determine compatibility by package manager

[lucasburlingham]

Hey! Found this tool in this Hacker News post and thought I might check it out.

To summarize, this pull request seeks to accomplish the following things:

• Make the unsnap script distro-agnostic by determining what package manager the system uses by default
• Colorize and standardize output to the terminal

Instead of determining if the script is compatible based upon what distro is being used, why not just find out if the system can successfully run the script? That way any distro can be used as long as support for the package manager (and their specific nuances) is there.

Included is the required code to generate scripts for the following package managers:

• apt
• pacman
• yum
• dnf
• zypper
• eopkg

This will fix the following issues (and more to come):

• Add support for Manjaro #3
• Add support for Fedora #4
• Add support for Debian. #14

I have tested my changes on Arch Linux and everything seems to be in working order.

[popey]

Thank you for this. I think you're right, using the package manager to determine is probably a good path rather than using the current method, thanks. Just one minor edit needed.

[lucasburlingham]

Syntax error corrected. Thank you!

[silkeh]

I found one minor issue when running this PR on Solus (eopkg). With the suggestion applied it works beautifully, thanks!

[silkeh]

I think this should be:

Suggested change

	PACKAGEMGR=$(command -v {apt,pacman} | sed "s/.*\///")
	PACKAGEMGR=$(command -v {apt,pacman,zypper,dnf,yum,eopkg} | sed "s/.*\///")

[silkeh]

@popey: would you be interested in me picking up this changeset in a new PR?

[popey]

Heya! Thanks for the ping. I haven't been looking at this for a while, but I'm hoping to get some time to clean up this repo shortly. Sorry for the lack of responses.