s0me1newithhand7s/system-manager
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Handle nix output better.

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R-VdP 2023-02-17 11:49:16 +01:00
parent 9bd82bc098
commit 1cce38559c
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1 changed files with 12 additions and 19 deletions
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31
src/generate.rs
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@ -1,4 +1,4 @@
use anyhow::{anyhow, Result};
use anyhow::{anyhow, Context, Result};
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use std::fs::DirBuilder;
@ -20,7 +20,7 @@ pub fn generate(flake_uri: &str) -> Result<StorePath> {
let profile_name = Path::new(PROFILE_NAME);
log::info!("Creating new generation from {}", store_path);
install_nix_profile(&store_path, profile_dir, profile_name).map(print_out_and_err)?;
install_nix_profile(&store_path, profile_dir, profile_name)?;
log::info!("Registering GC root...");
create_gcroot(GCROOT_PATH, &profile_dir.join(profile_name))?;
@ -42,14 +42,16 @@ fn install_nix_profile(
store_path: &StorePath,
profile_dir: &Path,
profile_name: &Path,
) -> Result<process::Output> {
) -> Result<process::ExitStatus> {
DirBuilder::new().recursive(true).create(profile_dir)?;
process::Command::new("nix-env")
.arg("--profile")
.arg(profile_dir.join(profile_name))
.arg("--set")
.arg(&store_path.store_path)
.output()
.stdout(process::Stdio::inherit())
.stderr(process::Stdio::inherit())
.status()
.map_err(anyhow::Error::from)
}
@ -76,7 +78,8 @@ fn get_store_path(nix_build_result: process::Output) -> Result<StorePath> {
fn parse_nix_build_output(output: String) -> Result<StorePath> {
let expected_output_name = "out";
let results: Vec<NixBuildOutput> = serde_json::from_str(&output)?;
let results: Vec<NixBuildOutput> =
serde_json::from_str(&output).context("Error reading nix build output")?;
if let [result] = results.as_slice() {
if let Some(store_path) = result.outputs.get(expected_output_name) {
@ -97,20 +100,10 @@ fn run_nix_build(flake_uri: &str, flake_attr: &str) -> Result<process::Output> {
.arg("build")
.arg(format!("{flake_uri}#{flake_attr}"))
.arg("--json")
// Nix outputs progress info on stderr and the final output on stdout,
// so we inherit and output stderr directly to the terminal, but we
// capture stdout as the result of this call
.stderr(process::Stdio::inherit())
.output()
.map_err(anyhow::Error::from)
}
fn print_out_and_err(output: process::Output) -> process::Output {
print_u8(&output.stdout);
print_u8(&output.stderr);
output
}
fn print_u8(bytes: &[u8]) {
str::from_utf8(bytes).map_or((), |s| {
if !s.trim().is_empty() {
log::info!("{}", s.trim())
}
})
}