1 files changed, 53 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/tools/yarn2nix-moretea/yarn2nix/internal/fixup_bin.js b/nixpkgs/pkgs/development/tools/yarn2nix-moretea/yarn2nix/internal/fixup_bin.js
new file mode 100755
index 000000000000..6f0b5c93fa0c
--- /dev/null
+++ b/nixpkgs/pkgs/development/tools/yarn2nix-moretea/yarn2nix/internal/fixup_bin.js
@@ -0,0 +1,53 @@
+#!/usr/bin/env node
+
+/* Usage:
+ * node fixup_bin.js <bin_dir> <modules_dir> [<bin_pkg_1>, <bin_pkg_2> ... ]
+ */
+
+const fs = require('fs')
+const path = require('path')
+
+const derivationBinPath = process.argv[2]
+const nodeModules = process.argv[3]
+const packagesToPublishBin = process.argv.slice(4)
+
+function processPackage(name) {
+  console.log('fixup_bin: Processing ', name)
+
+  const packagePath = `${nodeModules}/${name}`
+  const packageJsonPath = `${packagePath}/package.json`
+  const packageJson = JSON.parse(fs.readFileSync(packageJsonPath))
+
+  if (!packageJson.bin) {
+    console.log('fixup_bin: No binaries provided')
+    return
+  }
+
+  // There are two alternative syntaxes for `bin`
+  // a) just a plain string, in which case the name of the package is the name of the binary.
+  // b) an object, where key is the name of the eventual binary, and the value the path to that binary.
+  if (typeof packageJson.bin === 'string') {
+    const binName = packageJson.bin
+    packageJson.bin = {}
+    packageJson.bin[packageJson.name] = binName
+  }
+
+  // eslint-disable-next-line no-restricted-syntax, guard-for-in
+  for (const binName in packageJson.bin) {
+    const binPath = packageJson.bin[binName]
+    const normalizedBinName = binName.replace('@', '').replace('/', '-')
+
+    const targetPath = path.normalize(`${packagePath}/${binPath}`)
+    const createdPath = `${derivationBinPath}/${normalizedBinName}`
+
+    console.log(
+      `fixup_bin: creating link ${createdPath} that points to ${targetPath}`,
+    )
+
+    fs.symlinkSync(targetPath, createdPath)
+  }
+}
+
+packagesToPublishBin.forEach(pkg => {
+  processPackage(pkg)
+})