#[allow(unused_imports)]
use crate::prelude::*;

#[derive(Debug, Clone, PartialEq, Hash)]
pub(crate) struct NixEvalExpr<E, A> {
    pub(crate) expr: E,
    pub(crate) attrpath: A,
}

impl<E, A> NixEvalExpr<E, A>
where
    E: AsRef<OsStr>,
    A: AsRef<OsStr>,
{
    pub(crate) fn into_command(self) -> Command {
        let mut cmd = Command::new("nix-instantiate");
        cmd.arg("--eval")
            .arg("--json")
            .arg("--strict")
            .arg("--expr")
            .arg(self.expr)
            .arg("-A")
            .arg(self.attrpath);

        cmd
    }
}