38 lines
909 B
Nix
38 lines
909 B
Nix
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{ depot, pkgs, lib, ... }:
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let
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exec-helpers = depot.nix.writers.rustSimpleLib
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{
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name = "exec-helpers";
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}
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(builtins.readFile ./exec_helpers.rs);
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print-one-env = depot.nix.writers.rustSimple
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{
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name = "print-one-env";
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dependencies = [
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depot.users.Profpatsch.execline.exec-helpers
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];
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} ''
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extern crate exec_helpers;
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use std::os::unix::ffi::OsStrExt;
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use std::io::Write;
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fn main() {
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let args = exec_helpers::args("print-one-env", 1);
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let valname = std::ffi::OsStr::from_bytes(&args[0]);
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match std::env::var_os(&valname) {
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None => exec_helpers::die_user_error("print-one-env", format!("Env variable `{:?}` is not set", valname)),
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Some(val) => std::io::stdout().write_all(&val.as_bytes()).unwrap()
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}
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}
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'';
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in
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depot.nix.readTree.drvTargets {
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inherit
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exec-helpers
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print-one-env
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;
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}
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