nixpkgs/pkgs/development/tools/yarn2nix/fixup_bin.js

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2018-03-09 22:28:28 +01:00
#!/usr/bin/env node
"use strict";
/* Usage:
* node fixup_bin.js <output_dir> [<bin_pkg_1>, <bin_pkg_2> ... ]
*/
const fs = require("fs");
const path = require("path");
const output = process.argv[2];
const packages_to_publish_bin = process.argv.slice(3);
const derivation_bin_path = output + "/bin";
function processPackage(name) {
console.log("Processing ", name);
const package_path = output + "/node_modules/" + name;
const package_json_path = package_path + "/package.json";
const package_json = JSON.parse(fs.readFileSync(package_json_path));
if (!package_json.bin) {
console.log("No binaries provided");
return;
}
// There are two alternative syntaxes for `bin`
// a) just a plain string, in which case the name of the package is the name of the binary.
// b) an object, where key is the name of the eventual binary, and the value the path to that binary.
if (typeof package_json.bin == "string") {
let bin_name = package_json.bin;
package_json.bin = { };
package_json.bin[package_json.name] = bin_name;
}
for (let binName in package_json.bin) {
const bin_path = package_json.bin[binName];
const full_bin_path = path.normalize(package_path + "/" + bin_path);
fs.symlinkSync(full_bin_path, derivation_bin_path + "/"+ binName);
console.log("Linked", binName);
}
}
packages_to_publish_bin.forEach((pkg) => {
processPackage(pkg);
});