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|
let {
body = lib;
lib = nixpkgs.lib // builtins // {
evalSource = let
eval = source: lib.evalModules {
modules = lib.singleton {
_file = toString ./.;
imports = map (source: { inherit source; }) (lib.toList source);
options.source = lib.mkOption {
default = {};
type = lib.types.attrsOf lib.types.source;
};
};
};
sanitize = x: lib.getAttr (lib.typeOf x) {
set = lib.mapAttrs
(lib.const sanitize)
(lib.filterAttrs
(name: value: name != "_module" && value != null) x);
string = x;
};
in
# This function's return value can be used as pkgs.populate input.
source: sanitize (eval source).config.source;
getHostName = let
# We're parsing /etc/hostname here because reading
# /proc/sys/kernel/hostname yields ""
y = lib.filter lib.types.label.check (lib.splitString "\n" (lib.readFile /etc/hostname));
in
if lib.length y != 1 then throw "malformed /etc/hostname" else
lib.elemAt y 0;
isLocalTarget = let
origin = lib.mkTarget "";
in target:
target.user == origin.user &&
lib.elem target.host [origin.host "localhost"];
mkTarget = s: let
default = defVal: val: if val != null then val else defVal;
parse = lib.match "(([^@]+)@)?(([^:/]+))?(:([^/]+))?(/.*)?" s;
elemAt' = xs: i: if lib.length xs > i then lib.elemAt xs i else null;
in {
user = default (lib.getEnv "LOGNAME") (elemAt' parse 1);
host = default (lib.maybeEnv "HOSTNAME" lib.getHostName) (elemAt' parse 3);
port = default "22" /* "ssh"? */ (elemAt' parse 5);
path = default "/var/src" /* no default? */ (elemAt' parse 6);
};
shell = let
isSafeChar = lib.testString "[-+./0-9:=A-Z_a-z]";
quoteChar = c:
if isSafeChar c then c
else if c == "\n" then "'\n'"
else "\\${c}";
in {
quote = x: if x == "" then "''" else lib.stringAsChars quoteChar x;
};
test = re: x: lib.isString x && lib.testString re x;
testString = re: x: lib.match re x != null;
types = nixpkgs.lib.types // import ./types { lib = body; };
};
nixpkgs.lib = import <nixpkgs/lib>;
}
|
