For packages with source, you could always compile youself. Are there are notable differences between the results of compiling by hand and installing a package? (assume the code base is the same)
Source code may be placed in this subdirectory, only for reference purposes. with a footnote adding that Generally, source should not be built within this hierarchy. It’s your system though so in my opinion /usr/local/src is fair game. What is the "/usr/local/src" folder meant for? has more on the topic; read this answer in particular.
Where should I put my source code? - Unix & Linux Stack Exchange
Via the Wall Street Journal, an Apple spokesperson fleshes out some of the finer details surrounding the fingerprint sensor and Touch ID. To use Touch ID, it is mandatory to also set up a passcode.
Where to download Linux Kernel source code of a specific version ...
The above executes the script. When the script is done, any changes that it made to the environment are discarded. . script The above sources the script. It is as if the commands had been typed in directly. Any environment changes are kept. source script This also sources the script. The source command is not required by POSIX and therefore is less portable than the shorter ..
source is a shell keyword that is supposed to be used like this: source file where file contains valid shell commands. These shell commands will be executed in the current shell as if typed from the command line.
Source vs . why different behaviour? - Unix & Linux Stack Exchange