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lix/tests/functional/repl_characterization/data/repl_printing.test
T
Lunaphied f3b2f3496b repl: allow :p to print derivation attrs.
Change-Id: I6a6a6964a58c3340acca9272c616c079c5218d6e
2025-11-19 17:46:52 +01:00

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Printing a string with escapes in it will render as a string normally.
nix-repl> "meow\n\nmeowmeowmeow"
"meow\n\nmeowmeowmeow"
But with :p on the string itself it will print it literally to the output.
nix-repl> :p "meow\n\nmeowmeowmeow"
meow
meowmeowmeow
nix-repl> builtins.listToAttrs (builtins.genList (x: { name = "meow${toString x}"; value = { meow = { inherit x; s = "meowmeow\n\n${toString x}"; }; }; }) 10)
{
meow0 = { ... };
meow1 = { ... };
meow2 = { ... };
meow3 = { ... };
meow4 = { ... };
meow5 = { ... };
meow6 = { ... };
meow7 = { ... };
meow8 = { ... };
meow9 = { ... };
}
Also, :p will expand attrs, but it will leave the strings escaped as normal if
they aren't the top level item being printed.
nix-repl> :p builtins.listToAttrs (builtins.genList (x: { name = "meow${toString x}"; value = { meow = { inherit x; s = "meowmeow\n\n${toString x}"; }; }; }) 10)
{
meow0 = {
meow = {
s = "meowmeow\n\n0";
x = 0;
};
};
meow1 = {
meow = {
s = "meowmeow\n\n1";
x = 1;
};
};
meow2 = {
meow = {
s = "meowmeow\n\n2";
x = 2;
};
};
meow3 = {
meow = {
s = "meowmeow\n\n3";
x = 3;
};
};
meow4 = {
meow = {
s = "meowmeow\n\n4";
x = 4;
};
};
meow5 = {
meow = {
s = "meowmeow\n\n5";
x = 5;
};
};
meow6 = {
meow = {
s = "meowmeow\n\n6";
x = 6;
};
};
meow7 = {
meow = {
s = "meowmeow\n\n7";
x = 7;
};
};
meow8 = {
meow = {
s = "meowmeow\n\n8";
x = 8;
};
};
meow9 = {
meow = {
s = "meowmeow\n\n9";
x = 9;
};
};
}
Printing an environment with :env after adding a variable to the scope
nix-repl> foo = "bar"
nix-repl> :env
Env level 0
static: foo
Env level 1
abort baseNameOf break builtins derivation derivationStrict dirOf false fetchGit fetchMercurial fetchTarball fetchTree fromTOML import isNull map null placeholder removeAttrs scopedImport throw toString true
Printing a derivation or something
nix-repl> fakeDrv = let drvAttrs = { builder = "meow"; system = "meower"; name = "mrowmrow"; }; in { inherit (drvAttrs) builder system name; inherit drvAttrs; type = "derivation"; }
nix-repl> :p fakeDrv
{
builder = "meow";
drvAttrs = «3 attributes elided»;
name = "mrowmrow";
system = "meower";
type = "derivation";
}