Current:
To create a new upstart-job (such as mysqld/ httpd) you have to change
upstart-jobs/default.nix
and write
upstart-jobs/yourjob.nix
example:
# DHCP client.
++ optional ["networking" "useDHCP"]
(import ../upstart-jobs/dhclient.nix {
inherit (pkgs) nettools dhcp lib;
interfaces = config.get ["networking" "interfaces"];
})
my proposal:
Goal: make a service behave more like plugins
interface-design:
cfg : pkgs : [(your job) (your job)]
Benefits: Don't have to modify upstart-jobs/default.nix
Thus if you want to run a second mysqld instances just copy the .nix file
and add configuration settings to you nixos/configuration.nix file
You can find a semi tested draft implementation here:
http://rafb.net/p/bDRWJe46.html
drawbacks:
Doesn't solve all issues
What we really need:
Think of running two mysqld instances and apache and phpMyAdmin
(DB-Web Interface)
So we want to add the web application phpMyAdmin to httpd and telling
phpMyAdmin which port to use !
How should the configuration look like?
let mysql_conf = { port = xxx; }; in
{ services = {
mysql = mysql_conf;
httpd = {
apps = { phpMyAdmin { mysql = mysql_conf, url_path = "/phpMyAdmin"}
}
}
would be pretty simple and phpMyAdmin knows wether myslqd has been
enabled and which port to use
additional: < niksnut> btw, maybe the services tree should be merged with the
nixos tree
I agree. Then the svn repository would look the same way /etc/nixos.
does.
Marc W.
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