From bf4a8d4b3dead30fb9360b7f66b0de0f3977e420 Mon Sep 17 00:00:00 2001
From: jneira <atreyu.bbb@gmail.com>
Date: Thu, 21 Oct 2021 13:41:20 +0200
Subject: [PATCH 1/3] Dirty hack to honour [circle ci]

---
 .circleci/config.yml | 34 ++++++++++++++++++++++++++++++----
 1 file changed, 30 insertions(+), 4 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 3ca5f6c8c1..5f076f7765 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -16,23 +16,49 @@ defaults: &defaults
         keys:
           - v4-stack-cache-{{ arch }}-{{ .Environment.CIRCLE_JOB }}-{{ checksum "resolver.txt" }}
 
+    - run:
+        name: Skip ci setup
+        command: |
+          set +e
+          echo $CIRCLE_PULL_REQUEST
+          if [[ ! -z $CIRCLE_PULL_REQUEST ]]; then
+            PULL_REQUEST_URL=${CIRCLE_PULL_REQUEST/github.com/api.github.com/repos}
+            PULL_REQUEST_URL=${PULL_REQUEST_URL/pull/pulls}
+            echo $PULL_REQUEST_URL
+            SKIP_CI=$(curl $PULL_REQUEST_URL | grep -o "\\[skip ci\\]")
+            echo $SKIP_CI
+          fi
+          echo "export SKIP_CI=$SKIP_CI" >> $BASH_ENV
+
     - run:
         name: Stack upgrade
-        command: stack upgrade
+        command: |
+          if [[ -z "$SKIP_CI" ]]; then
+            stack upgrade
+          fi
 
     - run:
         name: Stack setup
-        command: stack -j2 --stack-yaml=${STACK_FILE} setup
+        command: |
+          if [[ -z "$SKIP_CI" ]]; then
+            stack -j2 --stack-yaml=${STACK_FILE} setup
+          fi
 
     - run:
         name: Build (we need the exe for tests)
         # need j1, else ghc-lib-parser triggers OOM
-        command: stack -j1 --stack-yaml=${STACK_FILE} install --no-terminal
+        command: |
+          if [[ -z "$SKIP_CI" ]]; then
+            stack -j1 --stack-yaml=${STACK_FILE} install --no-terminal
+          fi
         no_output_timeout: 30m
 
     - run:
         name: Build Testsuite without running it
-        command: stack -j1 --stack-yaml=${STACK_FILE} build --test --no-run-tests --no-terminal
+        command: |
+          if [[ -z "$SKIP_CI" ]]; then
+            stack -j1 --stack-yaml=${STACK_FILE} build --test --no-run-tests --no-terminal
+          fi
         no_output_timeout: 30m
 
     - store_artifacts:

From dfef2f6c4b8f03d64563a1d524463f8d8bc75f7a Mon Sep 17 00:00:00 2001
From: jneira <atreyu.bbb@gmail.com>
Date: Thu, 21 Oct 2021 14:08:04 +0200
Subject: [PATCH 2/3] Show vars name in echos

---
 .circleci/config.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 5f076f7765..16c5e057dc 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -20,13 +20,13 @@ defaults: &defaults
         name: Skip ci setup
         command: |
           set +e
-          echo $CIRCLE_PULL_REQUEST
+          echo "CIRCLE_PULL_REQUEST: $CIRCLE_PULL_REQUEST"
           if [[ ! -z $CIRCLE_PULL_REQUEST ]]; then
             PULL_REQUEST_URL=${CIRCLE_PULL_REQUEST/github.com/api.github.com/repos}
             PULL_REQUEST_URL=${PULL_REQUEST_URL/pull/pulls}
-            echo $PULL_REQUEST_URL
+            echo "PULL_REQUEST_URL: $PULL_REQUEST_URL"
             SKIP_CI=$(curl $PULL_REQUEST_URL | grep -o "\\[skip ci\\]")
-            echo $SKIP_CI
+            echo "SKIP_CI: $SKIP_CI"
           fi
           echo "export SKIP_CI=$SKIP_CI" >> $BASH_ENV
 

From c760d91c8c6576764ff355d03d2304a6e408214b Mon Sep 17 00:00:00 2001
From: Javier Neira <atreyu.bbb@gmail.com>
Date: Fri, 22 Oct 2021 11:16:42 +0200
Subject: [PATCH 3/3] Add comment about the hack

---
 .circleci/config.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 16c5e057dc..0ce6ca2740 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -16,6 +16,7 @@ defaults: &defaults
         keys:
           - v4-stack-cache-{{ arch }}-{{ .Environment.CIRCLE_JOB }}-{{ checksum "resolver.txt" }}
 
+    # Looking for the string [skip ci] in all the json returned by https://docs.github.com/en/rest/reference/pulls#get-a-pull-request
     - run:
         name: Skip ci setup
         command: |