Do less unnecessary work on CI

We were checking out & installing the develop js-sdk explicitly
in cases where we didn't need it at all. We were babeling the src
folder many, many times over (in some cases twice in the same job)
and never using the output at all.

.buildkite/pipeline.yaml

@@ -2,7 +2,8 @@ steps:
   - label: ":eslint: JS Lint"
     command:
       - "echo '--- Install js-sdk'"
-      - "./scripts/ci/install-deps.sh"
+      - "./scripts/ci/install-deps.sh --ignore-scripts"
+      - "echo '+++ Lint"
       - "yarn lint:js"
     plugins:
       - docker#v3.0.1:
@@ -10,8 +11,9 @@ steps:
 
   - label: ":eslint: TS Lint"
     command:
-      - "echo '--- Install js-sdk'"
-      - "./scripts/ci/install-deps.sh"
+      - "echo '--- Install"
+      - "yarn install --ignore-scripts"
+      - "echo '+++ Lint"
       - "yarn lint:ts"
     plugins:
       - docker#v3.0.1:
@@ -19,8 +21,9 @@ steps:
 
   - label: ":eslint: Types Lint"
     command:
-      - "echo '--- Install js-sdk'"
-      - "./scripts/ci/install-deps.sh"
+      - "echo '--- Install"
+      - "yarn install --ignore-scripts"
+      - "echo '+++ Lint"
       - "yarn lint:types"
     plugins:
       - docker#v3.0.1:
@@ -41,13 +44,10 @@ steps:
       queue: "medium"
     command:
       - "echo '--- Install js-sdk'"
-      # TODO: Remove hacky chmod for BuildKite
-      - "chmod +x ./scripts/ci/*.sh"
-      - "chmod +x ./scripts/*"
-      - "echo '--- Installing Dependencies'"
-      - "./scripts/ci/install-deps.sh"
-      - "echo '--- Running initial build steps'"
-      - "yarn build"
+      # We don't use the babel-ed output for anything so we can --ignore-scripts
+      # to save transpiling the files. We run the transpile step explicitly in
+      # the 'build' job.
+      - "./scripts/ci/install-deps.sh --ignore-scripts"
       - "echo '+++ Running Tests'"
       - "yarn test"
     plugins:
@@ -56,10 +56,8 @@ steps:
 
   - label: "🛠 Build"
     command:
-      - "echo '--- Install js-sdk'"
-      - "./scripts/ci/install-deps.sh"
-      - "echo '+++ Building Project'"
-      - "yarn build"
+      - "echo '+++ Install & Build'"
+      - "yarn install"
     plugins:
       - docker#v3.0.1:
           image: "node:12"
@@ -70,14 +68,8 @@ steps:
       # e2e tests otherwise take +-8min
       queue: "xlarge"
     command:
-      # TODO: Remove hacky chmod for BuildKite
-      - "echo '--- Setup'"
-      - "chmod +x ./scripts/ci/*.sh"
-      - "chmod +x ./scripts/*"
       - "echo '--- Install js-sdk'"
-      - "./scripts/ci/install-deps.sh"
-      - "echo '--- Running initial build steps'"
-      - "yarn build"
+      - "./scripts/ci/install-deps.sh --ignore-scripts"
       - "echo '+++ Running Tests'"
       - "./scripts/ci/end-to-end-tests.sh"
     plugins:
@@ -96,9 +88,6 @@ steps:
       # webpack loves to gorge itself on resources.
       queue: "medium"
     command:
-      # TODO: Remove hacky chmod for BuildKite
-      - "chmod +x ./scripts/ci/*.sh"
-      - "chmod +x ./scripts/*"
       - "echo '+++ Running Tests'"
       - "./scripts/ci/riot-unit-tests.sh"
     plugins:
@@ -110,7 +99,7 @@ steps:
   - label: "🌐 i18n"
     command:
       - "echo '--- Fetching Dependencies'"
-      - "yarn install"
+      - "yarn install --ignore-scripts"
       - "echo '+++ Testing i18n output'"
       - "yarn diff-i18n"
     plugins:

scripts/ci/install-deps.sh

@@ -6,9 +6,9 @@ scripts/fetchdep.sh matrix-org matrix-js-sdk
 
 pushd matrix-js-sdk
 yarn link
-yarn install
+yarn install $@
 yarn build
 popd
 
 yarn link matrix-js-sdk
-yarn install
+yarn install $@