fed41f4959
nix-home is (hopefully) gonna be a home-manager alternative for my home directory. Files are symlinked into the home directory via GNU stow (since that is a tried and tested tool), so first step is to set up the base code for that. Implements a small tool that reads a single environment variable and prints it to stdout. Change-Id: Ifa3fd9f9e1cedc52c3002196d3971b02cb840e80 Reviewed-on: https://cl.tvl.fyi/c/depot/+/4832 Tested-by: BuildkiteCI Reviewed-by: Profpatsch <mail@profpatsch.de> Autosubmit: Profpatsch <mail@profpatsch.de>
33 lines
883 B
Nix
33 lines
883 B
Nix
{ depot, pkgs, lib, ... }:
|
|
|
|
let
|
|
exec-helpers = depot.nix.writers.rustSimpleLib {
|
|
name = "exec-helpers";
|
|
} (builtins.readFile ./exec_helpers.rs);
|
|
|
|
print-one-env = depot.nix.writers.rustSimple {
|
|
name = "print-one-env";
|
|
dependencies = [
|
|
depot.users.Profpatsch.execline.exec-helpers
|
|
];
|
|
} ''
|
|
extern crate exec_helpers;
|
|
use std::os::unix::ffi::OsStrExt;
|
|
use std::io::Write;
|
|
|
|
fn main() {
|
|
let args = exec_helpers::args("print-one-env", 1);
|
|
let valname = std::ffi::OsStr::from_bytes(&args[0]);
|
|
match std::env::var_os(&valname) {
|
|
None => exec_helpers::die_user_error("print-one-env", format!("Env variable `{:?}` is not set", valname)),
|
|
Some(val) => std::io::stdout().write_all(&val.as_bytes()).unwrap()
|
|
}
|
|
}
|
|
'';
|
|
|
|
in depot.nix.readTree.drvTargets {
|
|
inherit
|
|
exec-helpers
|
|
print-one-env
|
|
;
|
|
}
|