I confirm that it now installs without problems on Debian. Thanks.
I will try it on some other popular Debian-based distros later, and post a patch if I find issues with installation.
While testing I noticed some tracking issues. Most are already reported or known so I describe only ones I think are not reported yet.
When I bend fingers backwards, it feels like there is some hardcoded limit which prevents virtual "fingers" to bend backwards. This is especially noticeable with thumbs. There is good article about how much thumb can bend backwards: http://udel.edu/~mcdonald/myththumb.html . Other fingers usually can somewhat bend backwards too, for example like on this picture: http://www.miketomich.com/sitebuilder/images/KateFeathered-444x189.jpg . It would be nice if Leap allowed virtual fingers to bend backwards like this. This would improve precision in some cases, especially when using Leap to set pose for character's hand, or pinching.
Other issue that that tool detection is unreliable when the tool is not very long. So, for example, I can't comfortably hold pencil, etc. I can hold the pencil so it appears as long enough for Leap, but it's not comfortable and therefore may reduce precision. Perhaps this is just a subcase of known problem that tools sometimes detected as hands.
On a bright side, there are noticable improvements in this release. Thank you for all your great work.