Port install2 test

tests/pkg/assets/install2/gold/test.gold

@@ -0,0 +1,42 @@
+// No package installed yet.
+==================
+exec main.toit
+
+STDERR---
+<[*WORKING-DIR*]>/package.lock:6:10: error: Package 'http://localhost:<[*PORT*]>/pkg/pkg1-1.0.0' not found
+    url: 'http://localhost:<[*PORT*]>/pkg/pkg1'
+         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+main.toit:5:8: error: Package 'pkg1' for prefix 'pkg1' not found
+import pkg1
+       ^~~~
+main.toit:8:14: error: Unresolved identifier: 'identify'
+  print pkg1.identify
+             ^~~~~~~~
+Compilation failed
+Exit Code: 1
+==================
+// Just 'install' doesn't add the missing dependencies.
+==================
+OK
+[pkg, install]
+==================
+== package.lock
+prefixes:
+  pkg1: pkg1
+
+packages:
+  pkg1:
+    url: 'http://localhost:<[*PORT*]>/pkg/pkg1'
+    version: 1.0.0
+    hash: <[*HASH*]>
+==================
+// With '--recompute' we get the missing dependencies.
+==================
+OK
+[pkg, install, --recompute]
+==================
+// Should work now.
+==================
+exec main.toit
+pkg1-1.0.0pkg2-2.4.2pkg3-3.1.2
+Exit Code: 0

tests/pkg/assets/install2/main.toit

@@ -0,0 +1,8 @@
+// Copyright (C) 2025 Toit contributors.
+// Use of this source code is governed by a Zero-Clause BSD license that can
+// be found in the tests/LICENSE file.
+
+import pkg1
+
+main:
+  print pkg1.identify

tests/pkg/assets/install2/package.lock

@@ -0,0 +1,8 @@
+prefixes:
+  pkg1: pkg1
+
+packages:
+  pkg1:
+    url: 'http://localhost:<[*PORT*]>/pkg/pkg1'
+    version: 1.0.0
+    hash: deadbeef1234567890abcdef1234567890abcdef

tests/pkg/assets/install2/package.yaml

@@ -0,0 +1,4 @@
+dependencies:
+  pkg1:
+    url: http://localhost:<[*PORT*]>/pkg/pkg1
+    version: ^1.0.0

tests/pkg/install2-gold-test.toit

@@ -0,0 +1,21 @@
+// Copyright (C) 2025 Toit contributors.
+// Use of this source code is governed by a Zero-Clause BSD license that can
+// be found in the tests/LICENSE file.
+
+import .gold-tester
+
+main args:
+  with-gold-tester --with-git-pkg-registry args: test it
+
+test tester/GoldTester:
+  tester.gold "test" [
+    ["// No package installed yet."],
+    ["exec", "main.toit"],
+    ["// Just 'install' doesn't add the missing dependencies."],
+    ["pkg", "install"],
+    ["package.lock"],
+    ["// With '--recompute' we get the missing dependencies."],
+    ["pkg", "install", "--recompute"],
+    ["// Should work now."],
+    ["exec", "main.toit"],
+  ]

tools/pkg/commands/install.toit

@@ -60,7 +60,10 @@ class InstallCommand extends PkgProjectCommand:
 
   execute:
     if not package:
-      project.install
+      if recompute:
+        project.install --recompute=recompute --registries=registries
+      else:
+        project.install
     else if not local:
       execute-remote
     else:

tools/pkg/project/project.toit

@@ -113,7 +113,12 @@ class Project:
     solve_ --update-everything --registries=registries
     save
 
-  install -> none:
+  install --recompute/True --registries/Registries -> none:
+    solve_ --no-update-everything --registries=registries
+    save
+    lock-file.install
+
+  install --recompute/bool=false -> none:
     lock-file.install
 
   clean -> none: