cabal-test: add build target job variable

This change adds support for custom target and removes the
configure step which is not necessary.
This change also uses the copr of cabal-install to get
a more up-to-date version.

Change-Id: I538e2b24abb66181d1ead2779bf6aa3440ee58ff

roles/cabal-test/README.rst

@@ -2,6 +2,10 @@ Run the cabal test command.
 
 **Role Variables**
 
+.. zuul:rolevar:: cabal_target
+
+   The cabal target(s) to test.
+
 .. zuul:rolevar:: zuul_work_dir
    :default: {{ zuul.project.src_dir }}
 

roles/cabal-test/defaults/main.yaml

@@ -1 +1,7 @@
+cabal_target: ""
+
 zuul_work_dir: "{{ zuul.project.src_dir }}"
+
+_cabal_install_args: "--only-dependencies {{ cabal_target }}"
+_cabal_build_args: "--enable-tests {{ cabal_target }}"
+_cabal_test_args: "{{ cabal_target }}"

roles/cabal-test/tasks/main.yaml

@@ -1,19 +1,14 @@
-- name: Run cabal install --only-dependencies
-  command: cabal install --only-dependencies
+- name: Run cabal install {{ _cabal_install_args }}
+  command: "cabal install {{ _cabal_install_args }}"
   args:
     chdir: "{{ zuul_work_dir }}"
 
-- name: Run cabal configure --enable-test
-  command: cabal configure --enable-test
+- name: Run cabal build {{ _cabal_build_args }}
+  command: "cabal build {{ _cabal_build_args }}"
   args:
     chdir: "{{ zuul_work_dir }}"
 
-- name: Run cabal build
-  command: cabal build
-  args:
-    chdir: "{{ zuul_work_dir }}"
-
-- name: Run cabal test
-  command: cabal test
+- name: Run cabal test {{ _cabal_test_args }}
+  command: "cabal test {{ _cabal_test_args }}"
   args:
     chdir: "{{ zuul_work_dir }}"

roles/ensure-cabal/README.rst

@@ -2,3 +2,4 @@ Ensure cabal is installed
 
 This role installs the cabal-install package and ensures
 the hackage packages list exists.
+This role uses the Fedora copr package.

roles/ensure-cabal/tasks/main.yaml

@@ -1,14 +1,24 @@
+- name: Make sure the role is run on Fedora
+  fail:
+    msg: "This role supports Fedora only"
+  when: "ansible_distribution != 'Fedora'"
+
 - name: Check cabal version
   command: cabal --version
   failed_when: false
   register: _cabal_version
 
-- name: Install cabal
-  package:
-    name: cabal-install
-    state: present
-  become: yes
-  when: "_cabal_version.rc != 0"
+- block:
+    - name: Install cabal copr
+      command: dnf copr enable -y petersen/cabal-install
+      become: true
+
+    - name: Install cabal
+      package:
+        name: cabal-install
+        state: present
+      become: true
+  when: _cabal_version.rc != 0
 
 - name: Check package
   stat:

zuul.d/haskell-jobs.yaml

@@ -5,6 +5,10 @@
 
       Responds to these variables:
 
+      .. zuul:jobvar:: cabal_target
+
+         The cabal target(s) to test.
+
       .. zuul:jobvar:: ghc_version
 
          Use the specified ghc version (``latest`` picks the latest).