fix: invalidate installed npm repositories correctly (bazel-contrib#1200

) (bazel-contrib#1205)

internal/copy_repository/copy_repository.bzl

@@ -34,10 +34,6 @@ def _copy_repository_impl(rctx):
 copy_repository = repository_rule(
     implementation = _copy_repository_impl,
     attrs = {
-        "lock_file": attr.label(
-            allow_single_file = True,
-            doc = "Though unused, this attribute is necessary to cause this rule to be re-executed anytime the node_modules changes.",
-        ),
         "marker_file": attr.label(allow_single_file = True),
     },
 )

internal/npm_install/generate_build_file.ts

@@ -42,6 +42,7 @@
 
 import * as fs from 'fs';
 import * as path from 'path';
+import * as crypto from 'crypto';
 
 function log_verbose(...m: any[]) {
   if (!!process.env['VERBOSE_LOGS']) console.error('[generate_build_file.js]', ...m);
@@ -59,7 +60,7 @@ const args = process.argv.slice(2);
 const WORKSPACE = args[0];
 const RULE_TYPE = args[1];
 const ERROR_ON_BAZEL_FILES = parseInt(args[2]);
-const LOCK_FILE_LABEL = args[3];
+const LOCK_FILE_PATH = args[3];
 const INCLUDED_FILES = args[4] ? args[4].split(',') : [];
 const DYNAMIC_DEPS = JSON.parse(args[5] || '{}');
 
@@ -333,17 +334,17 @@ def _maybe(repo_rule, name, **kwargs):
         path.posix.join(workspaceSourcePath, 'BUILD.bazel'),
         '# Marker file that this directory is a bazel package');
   }
+  const sha256sum = crypto.createHash('sha256');
+  sha256sum.update(fs.readFileSync(LOCK_FILE_PATH, {encoding: 'utf8'}));
   writeFileSync(
       path.posix.join(workspaceSourcePath, '_bazel_workspace_marker'),
-      '# Marker file to used by custom copy_repository rule');
+      `# Marker file to used by custom copy_repository rule\n${sha256sum.digest('hex')}`);
 
   bzlFile += `def install_${workspace}():
     _maybe(
         copy_repository,
         name = "${workspace}",
         marker_file = "@${WORKSPACE}//_workspaces/${workspace}:_bazel_workspace_marker",
-        # Ensure that changes to the node_modules cause the copy to re-execute
-        lock_file = "@${WORKSPACE}${LOCK_FILE_LABEL}",
     )
 `;
 

internal/npm_install/npm_install.bzl

@@ -28,7 +28,7 @@ load("//internal/node:node_labels.bzl", "get_node_label", "get_npm_label", "get_
 COMMON_ATTRIBUTES = dict(dict(), **{
     "always_hide_bazel_files": attr.bool(
         doc = """Always hide Bazel build files such as `BUILD` and BUILD.bazel` by prefixing them with `_`.
-        
+
 Defaults to False, in which case Bazel files are _not_ hidden when `symlink_node_modules`
 is True. In this case, the rule will report an error when there are Bazel files detected
 in npm packages.
@@ -78,7 +78,7 @@ Note that the pattern used by many packages, which have plugins in the form pkg-
 added as implicit dependencies. Thus for example, `rollup` will automatically get `rollup-plugin-json` included in its
 dependencies without needing to use this attribute.
 
-The keys in the dict are npm package names, and the value may be a particular package, or a prefix ending with *.     
+The keys in the dict are npm package names, and the value may be a particular package, or a prefix ending with *.
 For example, `dynamic_deps = {"@bazel/typescript": "tsickle", "karma": "my-karma-plugin-*"}`
 
 Note, this may sound like "optionalDependencies" but that field in package.json actually means real dependencies
@@ -134,7 +134,7 @@ fine grained npm dependencies.
     ),
     "symlink_node_modules": attr.bool(
         doc = """Turn symlinking of node_modules on
-        
+
 This requires the use of Bazel 0.26.0 and the experimental
 managed_directories feature.
 
@@ -163,7 +163,7 @@ def _create_build_files(repository_ctx, rule_type, node, lock_file):
         repository_ctx.attr.name,
         rule_type,
         "1" if error_on_build_files else "0",
-        str(lock_file),
+        repository_ctx.path(lock_file),
         ",".join(repository_ctx.attr.included_files),
         str(repository_ctx.attr.dynamic_deps),
     ])
@@ -413,7 +413,7 @@ yarn_install = repository_rule(
         "frozen_lockfile": attr.bool(
             default = False,
             doc = """Passes the --frozen-lockfile flag to prevent updating yarn.lock.
-            
+
 Note that enabling this option will require that you run yarn outside of Bazel
 when making changes to package.json.
 """,