Some dependencies aren't actually required but can be optionally
installed for extra functionality.
The Chromecast is an optional audio backend
VLC is an optional audio backend
pyalsaaudio is only used by the mark1 enclosure
google-api-python-client is an optional STT backend, by default Mycroft
uses the Mycroft servers
On serial connections, with weird terminal emulators or when run interactively
the terminal may not support colours this would cause the dev_setup to
be aborted. This adds a simple check for terminal colors.
"-1" for no color support was empirically established.
add `os_is()` and `os_is_like()` call support for debian-like OSes (specifically Mint, but also cover Ubuntu)
Ubuntu should already be covered via "is like debian" (but now we're extra covered)
Also if there is NO match, we should really prompt the user for what to do.
+ Always use single quotes around strings that are fully meant literal and do not contain single quotes themselves.
+ Remove curly braces around variable names, if no next character or a space is following.
+ Remove curly braces double quotes around single variables (and command substitutions) that are assigned to variables. The contained strings are always added correctly with spaces.
+ Merge multiple printed lines into one echo call.
* Improve detection of correct package manager
Use the new function os_is_like to detect Fedora based systems and Debian derivatives.
* Update manual install instructions
Manual install instructions were quite outdated and does not match the
actual needed packages.
* Update colors.
Green for detected OSes, Yellow if OS was not detected. Blue is kept for
package highlighting list of packages needed.
+ Consequently use double square brackets (over single square backets), to be consistent and benefit from this syntax
+ Skip obsolete quoting of left sided variables and strings in double square brackets
+ Use "-z" instead of comparing with empty string explicitly in double square brackets
+ Merge multiple double square bracket expressions, connected by "&&" or "||", into a single expression
+ "! -z" => "-n"
+ Remove obsolete free spaces from command substitutions, to be consistent