Mattermost does have an Github Repository with a choice of three licenses: MIT (if using versions compiled by them), AGPLv3 (if compiled by you) or an Enterprise license. I would count that as open source.
8uurg
Don't forget Minecraft either.
Fair, though I don't think rallies are a good indicator for enthusiasm in the general voting public. If you have access to polls you may be able to judge things somewhat better (even if polls have their own problems). I like to believe that a politician like Bernie is smart enough to have at least given the option a thought, and figured that running would guarantee a DJT win.
With hindsight, it may be easy to say that it would have been worth a try anyway (given who won in the end...).
Even so, even if he won, it would not be easy to be a president without backing in the US. The only reason DJT is not in prison is support from the other branches of the US government.
It is surprising how many people don't realise the spoiler effect inherent in first-past-the-post makes running as an independent an bad idea: you are more likely to split the vote with a candidate who agrees with some of your points, causing both of you to lose, than being able to bring change.
What about the plug for the PSU for the power cable from the wall socket?
As a past customer of Gandi, they have been bought out and have been significantly increasing their prices (renewal this year would have cost me twice what I paid a couple years back) while reducing the value proposition of their offering (e-mail is no longer included...)
Especially because the borrow checker is the point, the added value, of rust. With it it can ensure compile time memory safety, without it it is just another programming language.
Note that while entering the Schengen area does not require a visa for USA citizens, you do have to get a visa waiver which is subject to limitations. See this document.
If you don't want to spend the time, you could have simply critiqued the image for being hard to read and interpret, as you are doing now - and requested they provide the source of the image (or the data). That would have been perfectly valid - as this image has seemingly gone through a lot of jpeg-ification and screeshotting, making captions and labels hard to read.
Add binary compatibility issues to that list: https://jangafx.com/insights/linux-binary-compatibility The moment you need software that is not packaged by your distro you either need to be lucky that whomever compiled it accounted for your setup, or compile it from scratch yourself (if open source and publicly available). Especially with closed source software (like most games) the latter isn't even an option.