Enable installing nimble siblings

Change-Id: I58f7b3038bd8239d5f04f66a18aad56ec77dad7d

roles/nimble/README.rst

@@ -10,7 +10,22 @@ Run nimble command in a source directory. Assumes the appropriate version of nim
 
 .. zuul:rolevar:: nim_path
 
-   Path where nim and nimble are installed.
+   Path to a directory where nim and nimble are installed.
+
+.. zuul:rolevar:: nimble_use_siblings
+   :type: bool
+   :default: true
+
+   Whether to configure nimble to build with siblings or not.
+
+.. zuul:rolevar:: nimble_siblings
+   :type: list
+
+   List of paths to directories containing nim projects to
+   configure nimble with ``nimble develop``. The projects
+   have to be managed by nimble and contain a ``.nimble``
+   file. By default this role will try to configure any
+   repos made available with ``job.required-projects``.
 
 .. zuul:rolevar:: zuul_work_dir
    :default: {{ zuul.project.src_dir }}

roles/nimble/defaults/main.yaml

@@ -1,2 +1,5 @@
 nimble_command: build
+nimble_use_siblings: true
+nimble_siblings: "{{ zuul.projects.values() | selectattr('required') | map(attribute='src_dir') | list }}"
 zuul_work_dir: "{{ zuul.project.src_dir }}"
+

roles/nimble/tasks/main.yaml

@@ -1,3 +1,14 @@
+- name: Configure siblings
+  when: nimble_use_siblings
+  command: nimble develop
+  environment:
+    PATH: "{{ nim_path }}:{{ ansible_env.PATH }}"
+  args:
+    chdir: "{{ zj_nimble_siblings }}"
+  loop: "{{ nimble_siblings }}"
+  loop_control:
+    loop_var: zj_nimble_siblings
+
 - name: Run nimble
   command: "nimble {{ nimble_command }} --accept"
   args:

test-playbooks/nimble/sibling/sibling.nimble

@@ -0,0 +1,12 @@
+# Package
+
+version       = "0.1.0"
+author        = "Albin Vass"
+description   = "A new awesome nimble package"
+license       = "MIT"
+srcDir        = "src"
+
+
+# Dependencies
+
+requires "nim >= 1.4.2"

test-playbooks/nimble/sibling/src/sibling.nim

@@ -0,0 +1,2 @@
+proc helloWorld*() =
+  echo "Hello world!"

test-playbooks/nimble/src/test.nim

@@ -1 +1,3 @@
-echo "Hello world!"
+import sibling
+
+helloWorld()

test-playbooks/nimble/test.nimble

@@ -11,3 +11,4 @@ bin           = @["test"]
 # Dependencies
 
 requires "nim >= 1.4.0"
+requires "sibling"

zuul-tests.d/nim-jobs.yaml

@@ -10,6 +10,8 @@
       - test-playbooks/nimble
     vars:
       zuul_work_dir: '{{ zuul.project.src_dir }}/test-playbooks/nimble'
+      nimble_siblings:
+        - '{{ zuul.project.src_dir }}/test-playbooks/nimble/sibling'
 
 - job:
     name: zuul-jobs-test-nimble-centos-7