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Copy pathmain.rs
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1068 lines (933 loc) · 32.3 KB
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mod build;
mod cfg;
mod cli;
mod cmd;
mod fetcher;
mod inputs;
mod lang;
mod license;
mod macros;
mod prompt;
mod utils;
use std::{
cmp::Ordering,
collections::{BTreeMap, BTreeSet},
fmt::Write as _,
fs::{create_dir_all, metadata, read_dir, read_to_string, File},
io::{stderr, BufRead, BufReader, Write as _},
path::{Component, Path, PathBuf},
};
use anyhow::{Context, Result};
use askalono::{IdentifiedLicense, ScanResult, ScanStrategy, TextData};
use bstr::{ByteSlice, ByteVec};
use cargo::core::Resolve;
use clap::Parser;
use expand::expand;
use flate2::read::GzDecoder;
use heck::{AsSnakeCase, ToKebabCase};
use indoc::{formatdoc, writedoc};
use is_terminal::IsTerminal;
use itertools::Itertools;
use once_cell::sync::Lazy;
use rustyline::{completion::FilenameCompleter, config::Configurer, CompletionType, Editor};
use serde::Deserialize;
use tempfile::tempdir;
use tokio::process::Command;
use tracing::debug;
use tracing_subscriber::EnvFilter;
use zip::ZipArchive;
use crate::{
build::{BuildType, RustVendor},
cfg::load_config,
cli::Opts,
cmd::{NIX, NURL},
fetcher::{Fetcher, PackageInfo, PypiFormat, Revisions, Version},
inputs::{write_all_lambda_inputs, write_inputs, write_lambda_input, AllInputs},
lang::{
go::{load_go_dependencies, write_ldflags},
python::{parse_requirements_txt, Pyproject},
rust::{cargo_deps_hash, load_cargo_lock, write_cargo_lock},
},
license::{get_nix_license, LICENSE_STORE},
prompt::{ask, ask_overwrite, prompt, Prompter},
utils::{fod_hash, CommandExt, ResultExt, FAKE_HASH},
};
#[derive(Debug, Deserialize)]
#[serde(untagged)]
enum MaybeFetcher {
Known(Fetcher),
Unknown { fetcher: String },
}
#[derive(Deserialize)]
struct BuildResult {
outputs: Outputs,
}
#[derive(Deserialize)]
struct Outputs {
out: String,
}
#[tokio::main]
async fn main() -> Result<()> {
run().await
}
async fn run() -> Result<()> {
tracing_subscriber::fmt()
.with_ansi(stderr().is_terminal())
.with_env_filter(EnvFilter::from_env("NIX_INIT_LOG"))
.with_writer(stderr)
.init();
let opts = Opts::parse();
tokio::spawn(async {
Lazy::force(&LICENSE_STORE);
});
let cfg = load_config(opts.config)?;
let mut editor = Editor::new()?;
editor.set_completion_type(CompletionType::Fuzzy);
editor.set_max_history_size(0)?;
let mut out = String::new();
writeln!(out, "{{ lib")?;
let url = match opts.url {
Some(url) => url,
None => {
editor.set_helper(Some(Prompter::NonEmpty));
editor.readline(&prompt("Enter url"))?
}
};
let mut fetcher =
serde_json::from_slice(&Command::new(NURL).arg(&url).arg("-p").get_stdout().await?)
.context("failed to parse nurl output")?;
let mut cmd = Command::new(NURL);
let mut licenses = BTreeMap::new();
let mut pypi_format = PypiFormat::TarGz;
let (pname, rev, version, desc, prefix, mut python_deps) =
if let MaybeFetcher::Known(ref mut fetcher) = &mut fetcher {
let cl = fetcher.create_client(cfg.access_tokens).await?;
let PackageInfo {
pname,
description,
file_url_prefix,
license,
python_dependencies,
revisions,
} = fetcher.get_package_info(&cl).await;
for license in license {
licenses.insert(license, 1.0);
}
let rev_msg = prompt(format_args!(
"Enter tag or revision (defaults to {})",
revisions.latest
));
editor.set_helper(Some(Prompter::Revision(revisions)));
let rev = editor.readline(&rev_msg)?;
let Some(Prompter::Revision(revisions)) = editor.helper_mut() else {
unreachable!();
};
let rev = if rev.is_empty() {
revisions.latest.clone()
} else {
rev
};
let version = match match revisions.versions.remove(&rev) {
Some(version) => Some(version),
None => fetcher.get_version(&cl, &rev).await,
} {
Some(Version::Latest | Version::Tag) => get_version_number(&rev).into(),
Some(Version::Pypi {
pname: pypi_pname,
format,
}) => {
if let Fetcher::FetchPypi { ref mut pname } = fetcher {
*pname = pypi_pname;
}
pypi_format = format;
rev.clone()
}
Some(Version::Head { date, .. } | Version::Commit { date, .. }) => {
format!("unstable-{date}")
}
None => get_version(&rev).into(),
};
if fetcher.has_submodules(&cl, &rev).await && !ask(&mut editor, "Fetch submodules")? {
cmd.arg("-S");
}
editor.set_helper(Some(Prompter::NonEmpty));
let version = editor.readline_with_initial(&prompt("Enter version"), (&version, ""))?;
(
Some(pname),
rev,
version,
description,
file_url_prefix,
python_dependencies,
)
} else {
let pname = url.parse::<url::Url>().ok_warn().and_then(|url| {
url.path_segments()
.and_then(|xs| xs.last())
.map(|pname| pname.strip_suffix(".git").unwrap_or(pname).into())
});
editor.set_helper(Some(Prompter::NonEmpty));
let rev = editor.readline(&prompt("Enter tag or revision"))?;
let version = get_version(&rev);
let version = editor.readline_with_initial(&prompt("Enter version"), (version, ""))?;
(pname, rev, version, "".into(), None, Default::default())
};
let pname = if let Some(pname) = pname {
editor.readline_with_initial(&prompt("Enter pname"), (&pname.to_kebab_case(), ""))?
} else {
editor.readline(&prompt("Enter pname"))?
};
let nixpkgs = opts
.nixpkgs
.or(cfg.nixpkgs)
.unwrap_or_else(|| "<nixpkgs>".into());
cmd.arg("-n").arg(&nixpkgs);
let src_expr = match fetcher {
MaybeFetcher::Known(Fetcher::FetchCrate { pname: ref name }) => {
let hash = String::from_utf8(cmd.arg(&url).arg(&rev).arg("-H").get_stdout().await?)
.context("failed to parse nurl output")?;
if &pname == name {
formatdoc! {r#"
fetchCrate {{
inherit pname version;
hash = "{hash}";
}}"#,
}
} else {
formatdoc! {r#"
fetchCrate {{
pname = {name:?};
inherit version;
hash = "{hash}";
}}"#,
}
}
}
MaybeFetcher::Known(Fetcher::FetchPypi { pname: ref name }) => {
cmd.arg("-H");
let mut ext = String::new();
if !matches!(pypi_format, PypiFormat::TarGz) {
write!(ext, "\n extension = \"{pypi_format}\";")?;
cmd.arg("-A").arg("extension").arg(pypi_format.to_string());
}
if &pname == name {
let hash = String::from_utf8(
cmd.arg(format!("https://pypi.org/project/{name}"))
.arg(&rev)
.get_stdout()
.await?,
)
.context("failed to parse nurl output")?;
formatdoc! {r#"
fetchPypi {{
inherit pname version;
hash = "{hash}";{ext}
}}"#,
}
} else {
let hash = String::from_utf8(
cmd.arg(format!("https://pypi.org/project/{name}"))
.arg(&rev)
.get_stdout()
.await?,
)
.context("failed to parse nurl output")?;
formatdoc! {r#"
fetchPypi {{
pname = {name:?};
inherit version;
hash = "{hash}";{ext}
}}"#,
}
}
}
_ => {
if rev == version {
cmd.arg("-o").arg("rev").arg("version");
} else if rev.contains(&version) {
cmd.arg("-O")
.arg("rev")
.arg(rev.replacen(&version, "${version}", 1));
}
String::from_utf8(
cmd.arg(&url)
.arg(&rev)
.arg("-i")
.arg("2")
.get_stdout()
.await?,
)
.context("failed to parse nurl output")?
}
};
let stdout = Command::new(NIX)
.arg("build")
.arg("--extra-experimental-features")
.arg("nix-command")
.arg("--impure")
.arg("--no-link")
.arg("--json")
.arg("--expr")
.arg(format!(
"let pname={pname:?};version={version:?};in(import({nixpkgs}){{}}).{src_expr}",
))
.get_stdout()
.await?;
let src = serde_json::from_slice::<Vec<BuildResult>>(&stdout)?
.into_iter()
.next()
.context("failed to build source")?
.outputs
.out;
let tmp;
let src_dir = if let MaybeFetcher::Known(Fetcher::FetchPypi { ref pname }) = fetcher {
let file = File::open(&src)?;
tmp = tempdir().context("failed to create temporary directory")?;
let tmp = tmp.path();
debug!("{}", tmp.display());
match pypi_format {
PypiFormat::TarGz => {
tar::Archive::new(GzDecoder::new(file))
.unpack(tmp)
.context("failed to unpack pypi package")?;
}
PypiFormat::Zip => {
ZipArchive::new(file)?.extract(tmp)?;
}
}
tmp.join(format!("{pname}-{version}"))
} else {
PathBuf::from(&src)
};
let mut choices = Vec::new();
let has_cargo = src_dir.join("Cargo.toml").is_file();
let cargo_lock = File::open(src_dir.join("Cargo.lock"));
let has_cargo_lock = cargo_lock.is_ok();
let has_cmake = src_dir.join("CMakeLists.txt").is_file();
let has_go = src_dir.join("go.mod").is_file();
let has_meson = src_dir.join("meson.build").is_file();
let has_zig = src_dir.join("build.zig").is_file();
let pyproject_toml = src_dir.join("pyproject.toml");
let has_python = pyproject_toml.is_file() || src_dir.join("setup.py").is_file();
let rust_vendors = if has_cargo {
if cargo_lock.map_or(true, |file| {
BufReader::new(file)
.lines()
.flatten()
.any(|line| line.starts_with(r#"source = "git+"#))
}) {
&[RustVendor::ImportCargoLock, RustVendor::FetchCargoTarball]
} else {
&[RustVendor::FetchCargoTarball, RustVendor::ImportCargoLock]
}
} else {
&[] as &[_]
};
if has_go {
choices.push(BuildType::BuildGoModule);
}
if has_python {
for rust in rust_vendors.iter().map(Some).chain(Some(None)) {
for application in [true, false] {
choices.push(BuildType::BuildPythonPackage {
application,
rust: rust.copied(),
});
}
}
}
if has_cargo {
for &vendor in rust_vendors {
let drv = BuildType::MkDerivation { rust: Some(vendor) };
let rust = BuildType::BuildRustPackage { vendor };
choices.extend(if has_meson { [drv, rust] } else { [rust, drv] });
}
}
choices.push(BuildType::MkDerivation { rust: None });
editor.set_helper(Some(Prompter::Build(choices)));
let choice = editor.readline(&prompt("How should this package be built?"))?;
let Some(Prompter::Build(choices)) = editor.helper_mut() else {
unreachable!();
};
let choice = *choice
.parse()
.ok()
.and_then(|i: usize| choices.get(i))
.unwrap_or_else(|| &choices[0]);
let output = if let Some(output) = opts.output {
output
} else {
editor.set_helper(Some(Prompter::Path(FilenameCompleter::new())));
let attr = if pname.starts_with(|c| matches!(c, 'A'..='Z' | 'a'..='z' | '_')) {
pname.clone()
} else {
format!("_{pname}")
};
let msg = &prompt("Enter output path (leave as empty for the current directory)");
let output = if !matches!(
choice,
BuildType::BuildPythonPackage {
application: false,
..
}
) && Path::new("pkgs/by-name").is_dir()
{
let path = &format!(
"pkgs/by-name/{}/{attr}/package.nix",
attr.chars().take(2).collect::<String>(),
);
editor.readline_with_initial(msg, (path, ""))
} else {
editor.readline(msg)
}?;
editor.set_helper(None);
if output.is_empty() {
PathBuf::from(".")
} else {
PathBuf::from(output)
}
};
let (out_dir, out_path) = if let Ok(metadata) = metadata(&output) {
if metadata.is_dir() {
let out_path = output.join("default.nix");
if out_path.exists() && ask_overwrite(&mut editor, &out_path)? {
return Ok(());
}
(Some(output.as_path()), out_path)
} else if ask_overwrite(&mut editor, &output)? {
return Ok(());
} else {
(output.parent(), output.clone())
}
} else if <[u8] as ByteSlice>::from_path(&output)
.map_or(false, |out_path| out_path.ends_with_str(b"/"))
{
let _ = create_dir_all(&output);
(Some(output.as_ref()), output.join("default.nix"))
} else {
let out_dir = output.parent();
if let Some(out_dir) = out_dir {
let _ = create_dir_all(out_dir);
}
(out_dir, output.clone())
};
let mut inputs = AllInputs::default();
match choice {
BuildType::BuildGoModule => {
writeln!(out, ", buildGoModule")?;
}
BuildType::BuildPythonPackage { application, rust } => {
writeln!(
out,
", {}",
if application {
"python3"
} else {
"buildPythonPackage"
}
)?;
if src_dir.join("poetry.lock").is_file() {
inputs.native_build_inputs.always.insert(
if application {
"python3.pkgs.poetry-core"
} else {
"poetry-core"
}
.into(),
);
}
if rust.is_some() {
inputs.native_build_inputs.always.extend([
"cargo".into(),
"rustPlatform.cargoSetupHook".into(),
"rustc".into(),
]);
}
}
BuildType::BuildRustPackage { .. } => {
writeln!(out, ", rustPlatform")?;
}
BuildType::MkDerivation { rust } => {
writeln!(out, ", stdenv")?;
if has_cmake {
inputs.native_build_inputs.always.insert("cmake".into());
}
if has_meson {
inputs
.native_build_inputs
.always
.extend(["meson".into(), "ninja".into()]);
}
if has_zig {
inputs.native_build_inputs.always.insert("zig.hook".into());
}
if rust.is_some() {
inputs.native_build_inputs.always.extend([
"cargo".into(),
"rustPlatform.cargoSetupHook".into(),
"rustc".into(),
]);
}
}
}
match fetcher {
MaybeFetcher::Known(fetcher) => {
writeln!(out, ", {fetcher}")?;
}
MaybeFetcher::Unknown { fetcher } => {
writeln!(out, ", {fetcher}")?;
}
}
let mut python_import = None;
let (native_build_inputs, build_inputs) = match choice {
BuildType::BuildGoModule => {
let go_sum = File::open(src_dir.join("go.sum")).ok_warn();
if let Some(go_sum) = &go_sum {
load_go_dependencies(&mut inputs, go_sum);
}
let hash = if src_dir.join("vendor").is_dir()
|| go_sum.and_then(|go_sum| go_sum.metadata().ok_warn())
.map_or(true, |metadata| metadata.len() == 0)
{
"null".into()
} else if let Some(hash) = fod_hash(format!(
r#"(import({nixpkgs}){{}}).buildGoModule{{pname={pname:?};version={version:?};src={src};vendorHash="{FAKE_HASH}";}}"#,
)).await {
format!(r#""{hash}""#)
} else {
format!(r#""{FAKE_HASH}""#)
};
let res = write_all_lambda_inputs(&mut out, &inputs, &mut BTreeSet::new())?;
writedoc! {out, r#"
}}:
buildGoModule rec {{
pname = {pname:?};
version = {version:?};
src = {src_expr};
vendorHash = {hash};
"#}?;
res
}
BuildType::BuildPythonPackage { application, rust } => {
enum RustVendorData {
Hash(String),
Lock(Option<Resolve>),
None,
}
let rust = match rust {
Some(RustVendor::FetchCargoTarball) => RustVendorData::Hash(
cargo_deps_hash(
&mut inputs,
&pname,
&version,
&src,
&src_dir,
has_cargo_lock,
&nixpkgs,
)
.await,
),
Some(RustVendor::ImportCargoLock) => {
if let Some(out_dir) = out_dir {
editor.set_helper(None);
let resolve =
load_cargo_lock(&mut editor, out_dir, &mut inputs, &src_dir).await?;
RustVendorData::Lock(resolve)
} else {
RustVendorData::Lock(None)
}
}
None => RustVendorData::None,
};
let mut pyproject = Pyproject::from_path(pyproject_toml);
if let Some(name) = pyproject.get_name() {
python_import = Some(name);
}
pyproject.load_license(&mut licenses);
pyproject.load_build_dependencies(&mut inputs, application);
if let Some(deps) = pyproject.get_dependencies() {
python_deps = deps;
}
if python_deps.always.is_empty() && python_deps.optional.is_empty() {
if let Some(deps) = parse_requirements_txt(&src_dir) {
python_deps = deps;
}
}
let mut written = BTreeSet::new();
if application {
written.insert("python3".into());
}
let res = write_all_lambda_inputs(&mut out, &inputs, &mut written)?;
if !application {
for name in python_deps
.always
.iter()
.chain(python_deps.optional.values().flatten())
{
write_lambda_input(&mut out, &mut written, &name.to_kebab_case())?;
}
}
writedoc! {out, r#"
}}:
{} rec {{
pname = {pname:?};
version = {version:?};
pyproject = true;
src = {src_expr};
"#,
if application {
"python3.pkgs.buildPythonApplication"
} else {
"buildPythonPackage"
},
}?;
match rust {
RustVendorData::Hash(hash) => {
write!(out, " ")?;
writedoc! {out, r#"
cargoDeps = rustPlatform.fetchCargoTarball {{
inherit src;
name = "${{pname}}-${{version}}";
hash = "{hash}";
}};
"#}?;
}
RustVendorData::Lock(resolve) => {
write!(out, " cargoDeps = rustPlatform.importCargoLock ")?;
write_cargo_lock(&mut out, has_cargo_lock, resolve).await?;
}
RustVendorData::None => {}
}
res
}
BuildType::BuildRustPackage {
vendor: RustVendor::FetchCargoTarball,
} => {
let hash = cargo_deps_hash(
&mut inputs,
&pname,
&version,
&src,
&src_dir,
has_cargo_lock,
&nixpkgs,
)
.await;
let res =
write_all_lambda_inputs(&mut out, &inputs, &mut ["rustPlatform".into()].into())?;
writedoc! {out, r#"
}}:
rustPlatform.buildRustPackage rec {{
pname = {pname:?};
version = {version:?};
src = {src_expr};
cargoHash = "{hash}";
"#}?;
res
}
BuildType::BuildRustPackage {
vendor: RustVendor::ImportCargoLock,
} => {
let resolve = if let Some(out_dir) = out_dir {
editor.set_helper(None);
load_cargo_lock(&mut editor, out_dir, &mut inputs, &src_dir).await?
} else {
None
};
let res =
write_all_lambda_inputs(&mut out, &inputs, &mut ["rustPlatform".into()].into())?;
writedoc! {out, r#"
}}:
rustPlatform.buildRustPackage rec {{
pname = "{pname}";
version = "{version}";
src = {src_expr};
cargoLock = "#,
}?;
write_cargo_lock(&mut out, has_cargo_lock, resolve).await?;
res
}
BuildType::MkDerivation { rust: None } => {
let res = write_all_lambda_inputs(&mut out, &inputs, &mut ["stdenv".into()].into())?;
writedoc! { out, r#"
}}:
stdenv.mkDerivation rec {{
pname = {pname:?};
version = {version:?};
src = {src_expr};
"#}?;
res
}
BuildType::MkDerivation {
rust: Some(RustVendor::FetchCargoTarball),
} => {
let hash = cargo_deps_hash(
&mut inputs,
&pname,
&version,
&src,
&src_dir,
has_cargo_lock,
&nixpkgs,
)
.await;
let res = write_all_lambda_inputs(&mut out, &inputs, &mut ["stdenv".into()].into())?;
writedoc! {out, r#"
}}:
stdenv.mkDerivation rec {{
pname = {pname:?};
version = {version:?};
src = {src_expr};
cargoDeps = rustPlatform.fetchCargoTarball {{
inherit src;
name = "${{pname}}-${{version}}";
hash = "{hash}";
}};
"#}?;
res
}
BuildType::MkDerivation {
rust: Some(RustVendor::ImportCargoLock),
} => {
let resolve = if let Some(out_dir) = out_dir {
editor.set_helper(None);
load_cargo_lock(&mut editor, out_dir, &mut inputs, &src_dir).await?
} else {
None
};
let res = write_all_lambda_inputs(&mut out, &inputs, &mut ["stdenv".into()].into())?;
writedoc! {out, r#"
}}:
stdenv.mkDerivation rec {{
pname = "{pname}";
version = "{version}";
src = {src_expr};
cargoDeps = rustPlatform.importCargoLock "#,
}?;
write_cargo_lock(&mut out, has_cargo_lock, resolve).await?;
res
}
};
if native_build_inputs {
write_inputs(&mut out, &inputs.native_build_inputs, "nativeBuildInputs")?;
}
if build_inputs {
write_inputs(&mut out, &inputs.build_inputs, "buildInputs")?;
}
match choice {
BuildType::BuildGoModule => {
write_ldflags(&mut out, &src_dir)?;
}
BuildType::BuildPythonPackage { application, .. } => {
if !python_deps.always.is_empty() {
write!(out, " propagatedBuildInputs = ")?;
if application {
write!(out, "with python3.pkgs; ")?;
}
writeln!(out, "[")?;
for name in python_deps.always {
writeln!(out, " {name}")?;
}
writeln!(out, " ];\n")?;
}
let mut optional = python_deps
.optional
.into_iter()
.filter(|(_, deps)| !deps.is_empty());
if let Some((extra, deps)) = optional.next() {
write!(out, " passthru.optional-dependencies = ")?;
if application {
write!(out, "with python3.pkgs; ")?;
}
writeln!(out, "{{\n {extra} = [",)?;
for name in deps {
writeln!(out, " {name}")?;
}
writeln!(out, " ];")?;
for (extra, deps) in optional {
writeln!(out, " {extra} = [")?;
for name in deps {
writeln!(out, " {name}")?;
}
writeln!(out, " ];")?;
}
writeln!(out, " }};\n")?;
}
writeln!(
out,
" pythonImportsCheck = [ \"{}\" ];\n",
AsSnakeCase(python_import.as_ref().unwrap_or(&pname)),
)?;
}
_ => {}
}
if !inputs.env.is_empty() {
writeln!(out, " env = {{")?;
for (k, (v, _)) in inputs.env {
writeln!(out, " {k} = {v};")?;
}
writeln!(out, " }};\n")?;
}
let mut desc = desc.trim_matches(|c: char| !c.is_alphanumeric()).to_owned();
desc.get_mut(0 .. 1).map(str::make_ascii_uppercase);
write!(out, " ")?;
writedoc! {out, r"
meta = with lib; {{
description = {desc:?};
homepage = {url:?};
"}?;
if let Some(prefix) = prefix {
if let Some(walk) = read_dir(&src_dir).ok_warn() {
for entry in walk {
let Ok(entry) = entry else {
continue;
};
let path = entry.path();
if !path.is_file() {
continue;
}
let name = entry.file_name();
let Some(name) = name.to_str() else {
continue;
};
if matches!(
name.to_ascii_lowercase().as_bytes(),
expand!([@b"changelog", ..] | [@b"changes", ..] | [@b"news"] | [@b"releases", ..]),
) {
writeln!(out, r#" changelog = "{prefix}{name}";"#)?;
break;
}
}
}
}
if let (Some(store), Some(walk)) = (&*LICENSE_STORE, read_dir(src_dir).ok_warn()) {
let strategy = ScanStrategy::new(store).confidence_threshold(0.8);
for entry in walk {
let Ok(entry) = entry else {
continue;
};
let path = entry.path();
if !path.is_file() {
continue;
}
let file_name = entry.file_name();
let name = <Vec<u8> as ByteVec>::from_os_str_lossy(&file_name);
if !matches!(
name.to_ascii_lowercase()[..],
expand!([@b"license", ..] | [@b"licence", ..] | [@b"copying", ..]),
) {
continue;
}
let Some(text) = read_to_string(&path).ok_warn() else {
continue;
};
let Some(ScanResult {
score,
license: Some(IdentifiedLicense { name, .. }),
..
}) = strategy.scan(&TextData::from(text)).ok_warn()
else {
continue;
};
if let Some(license) = get_nix_license(name) {
debug!(
"license found in {}: {license}",
file_name.to_string_lossy(),
);
licenses.entry(license).or_insert(score);
}
}
}
let licenses: Vec<_> = licenses
.into_iter()
.sorted_unstable_by(|x, y| match x.1.partial_cmp(&y.1) {
None | Some(Ordering::Equal) => x.0.cmp(y.0),
Some(cmp) => cmp,
})
.map(|(license, _)| license)
.collect();
write!(out, " license = ")?;
if licenses.is_empty() {
writeln!(
out,
"licenses.unfree; # FIXME: nix-init did not found a license",
)?;
} else if let [license] = &licenses[..] {
writeln!(out, "licenses.{license};")?;
} else {
write!(out, "with licenses; [ ")?;
for license in licenses {
write!(out, "{license} ")?;
}
writeln!(out, "];")?;
}
write!(out, " maintainers = with maintainers; [ ")?;
for maintainer in cfg.maintainers {
write!(out, "{maintainer} ")?;
}
writeln!(out, "];")?;
if !matches!(choice, BuildType::BuildPythonPackage { application, .. } if !application) {
writeln!(out, " mainProgram = {pname:?};")?;
}
if matches!(choice, BuildType::MkDerivation { .. }) {
if has_zig {
writeln!(out, " inherit (zig.meta) platforms;")?;