add basic tekton zcash env

contrib/ci-builders/tekton/tekton-labs/README.md

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+# infra-tekton-labs
+Examples of CI/CD used to support Zcash build and testing
+
+# Environment Tooling Setup
+### Install Docker
+https://docs.docker.com/engine/install/ 
+
+#### Setup Docker 
+If you are installing Docker for the first time, to run `docker` without `sudo` priviledge for every docker command:
+
+    - Check if Docker group already exists:
+        - `cat /etc/group | grep docker`
+        - How to create docker group:
+            - `sudo groupadd docker`
+    - Add current user to docker group
+        - `sudo usermod -a -G docker $CURR_USER`
+    - Validate current user was added:
+        - `cat /etc/group | grep docker`
+    - Restart system to persist changes and graceful setup (had issues with just logout/login)
+
+### Install Kind
+https://kind.sigs.k8s.io/
+
+### Install Kubctl
+https://kubernetes.io/docs/tasks/tools/install-kubectl-linux/ 
+
+### Install Tkn
+https://tekton.dev/docs/cli/
+
+# Setup Local Zcash CI environment
+
+### Create cluster (e.g. micro k8, kind, minicube)
+1. `kind create cluster --name zcash-tekton-lab`
+
+    Other Useful commands
+    - Validate cluster creation & context: `kubectl cluster-info --context kind-zcash-tekton-lab`
+
+    - Delete cluster: `kind delete cluster --name zcash-tekton-lab || true`
+
+    - List Kube contexts: `kubectl config get-contexts`
+
+    - Delete Kube contexts: `kubectl config delete-context <context_name>`
+
+    - Setup Kube context: `kubectl config current-context`
+
+    - Create new Kube context: `kubectl config set-context zcash_local_ci --user=cluster-admin`
+
+    - Switch to new context: `kubectl config use-context zcash_local_ci`
+
+### Create Tekton Pipeline in cluster
+See: https://github.com/tektoncd/pipeline for recent version
+2. `kubectl apply -f releases/tekton-pipeline-v0.37.0.yaml`
+    
+    (Alternative)
+   `kubectl apply -f https://storage.googleapis.com/tekton-releases/pipeline/previous/v0.37.0/release.yaml`
+
+### Create Tekton Dashboard in cluster
+See: https://github.com/tektoncd/dashboard for recent version
+3. `kubectl apply -f releases/tekton-dashboard-readonly-v0.27.0.yaml`
+
+    Validate deployment of Tekton Dashboard & Pipeline
+    `kubectl get pods --namespace tekton-pipelines`
+
+    Forward Tekton Dashboard:
+    `kubectl --namespace tekton-pipelines port-forward svc/tekton-dashboard 9097:9097 &`
+
+    View Dashboard in Browser:
+    `http://localhost:9097/`
+
+## Create Tekton Task
+kubectl apply -f ./tasks/zcash-build.yml
+
+tkn task start --showlog zcash-build
+
+tkn task delete zcash-build
+
+## Create Tekton Pipeline

contrib/ci-builders/tekton/tekton-labs/releases/tekton-dashboard-readonly-v0.27.0.yaml

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+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  labels:
+    app.kubernetes.io/component: dashboard
+    app.kubernetes.io/instance: default
+    app.kubernetes.io/part-of: tekton-dashboard
+  name: extensions.dashboard.tekton.dev
+spec:
+  group: dashboard.tekton.dev
+  names:
+    categories:
+      - tekton
+      - tekton-dashboard
+    kind: Extension
+    plural: extensions
+    shortNames:
+      - ext
+      - exts
+  preserveUnknownFields: false
+  scope: Namespaced
+  versions:
+    - additionalPrinterColumns:
+        - jsonPath: .spec.apiVersion
+          name: API version
+          type: string
+        - jsonPath: .spec.name
+          name: Kind
+          type: string
+        - jsonPath: .spec.displayname
+          name: Display name
+          type: string
+        - jsonPath: .metadata.creationTimestamp
+          name: Age
+          type: date
+      name: v1alpha1
+      schema:
+        openAPIV3Schema:
+          type: object
+          x-kubernetes-preserve-unknown-fields: true
+      served: true
+      storage: true
+      subresources:
+        status: {}
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  labels:
+    app.kubernetes.io/component: dashboard
+    app.kubernetes.io/instance: default
+    app.kubernetes.io/part-of: tekton-dashboard
+  name: tekton-dashboard
+  namespace: tekton-pipelines
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  labels:
+    app.kubernetes.io/instance: default
+    app.kubernetes.io/part-of: tekton-dashboard
+  name: tekton-dashboard-info
+  namespace: tekton-pipelines
+rules:
+  - apiGroups:
+      - ""
+    resourceNames:
+      - dashboard-info
+    resources:
+      - configmaps
+    verbs:
+      - get
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    app.kubernetes.io/component: dashboard
+    app.kubernetes.io/instance: default
+    app.kubernetes.io/part-of: tekton-dashboard
+  name: tekton-dashboard-backend
+rules:
+  - apiGroups:
+      - apiextensions.k8s.io
+    resources:
+      - customresourcedefinitions
+    verbs:
+      - get
+      - list
+  - apiGroups:
+      - security.openshift.io
+    resources:
+      - securitycontextconstraints
+    verbs:
+      - use
+  - apiGroups:
+      - tekton.dev
+    resources:
+      - clustertasks
+      - clustertasks/status
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - triggers.tekton.dev
+    resources:
+      - clusterinterceptors
+      - clustertriggerbindings
+    verbs:
+      - get
+      - list
+      - watch
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    app.kubernetes.io/component: dashboard
+    app.kubernetes.io/instance: default
+    app.kubernetes.io/part-of: tekton-dashboard
+  name: tekton-dashboard-tenant
+rules:
+  - apiGroups:
+      - dashboard.tekton.dev
+    resources:
+      - extensions
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - ""
+    resources:
+      - events
+      - namespaces
+      - pods
+      - pods/log
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - tekton.dev
+    resources:
+      - tasks
+      - taskruns
+      - pipelines
+      - pipelineruns
+      - pipelineresources
+      - conditions
+      - tasks/status
+      - taskruns/status
+      - pipelines/status
+      - pipelineruns/status
+      - taskruns/finalizers
+      - pipelineruns/finalizers
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - triggers.tekton.dev
+    resources:
+      - eventlisteners
+      - triggerbindings
+      - triggers
+      - triggertemplates
+    verbs:
+      - get
+      - list
+      - watch
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  labels:
+    app.kubernetes.io/instance: default
+    app.kubernetes.io/part-of: tekton-dashboard
+  name: tekton-dashboard-info
+  namespace: tekton-pipelines
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: tekton-dashboard-info
+subjects:
+  - apiGroup: rbac.authorization.k8s.io
+    kind: Group
+    name: system:authenticated
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  labels:
+    app.kubernetes.io/component: dashboard
+    app.kubernetes.io/instance: default
+    app.kubernetes.io/part-of: tekton-dashboard
+    rbac.dashboard.tekton.dev/subject: tekton-dashboard
+  name: tekton-dashboard-backend
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: tekton-dashboard-backend
+subjects:
+  - kind: ServiceAccount
+    name: tekton-dashboard
+    namespace: tekton-pipelines
+---
+apiVersion: v1
+data:
+  version: v0.27.0
+kind: ConfigMap
+metadata:
+  labels:
+    app.kubernetes.io/instance: default
+    app.kubernetes.io/part-of: tekton-dashboard
+  name: dashboard-info
+  namespace: tekton-pipelines
+---
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    app: tekton-dashboard
+    app.kubernetes.io/component: dashboard
+    app.kubernetes.io/instance: default
+    app.kubernetes.io/name: dashboard
+    app.kubernetes.io/part-of: tekton-dashboard
+    app.kubernetes.io/version: v0.27.0
+    dashboard.tekton.dev/release: v0.27.0
+    version: v0.27.0
+  name: tekton-dashboard
+  namespace: tekton-pipelines
+spec:
+  ports:
+    - name: http
+      port: 9097
+      protocol: TCP
+      targetPort: 9097
+  selector:
+    app.kubernetes.io/component: dashboard
+    app.kubernetes.io/instance: default
+    app.kubernetes.io/name: dashboard
+    app.kubernetes.io/part-of: tekton-dashboard
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: tekton-dashboard
+    app.kubernetes.io/component: dashboard
+    app.kubernetes.io/instance: default
+    app.kubernetes.io/name: dashboard
+    app.kubernetes.io/part-of: tekton-dashboard
+    app.kubernetes.io/version: v0.27.0
+    dashboard.tekton.dev/release: v0.27.0
+    version: v0.27.0
+  name: tekton-dashboard
+  namespace: tekton-pipelines
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/component: dashboard
+      app.kubernetes.io/instance: default
+      app.kubernetes.io/name: dashboard
+      app.kubernetes.io/part-of: tekton-dashboard
+  template:
+    metadata:
+      labels:
+        app: tekton-dashboard
+        app.kubernetes.io/component: dashboard
+        app.kubernetes.io/instance: default
+        app.kubernetes.io/name: dashboard
+        app.kubernetes.io/part-of: tekton-dashboard
+        app.kubernetes.io/version: v0.27.0
+      name: tekton-dashboard
+    spec:
+      containers:
+        - args:
+            - --port=9097
+            - --logout-url=
+            - --pipelines-namespace=tekton-pipelines
+            - --triggers-namespace=tekton-pipelines
+            - --read-only=true
+            - --log-level=info
+            - --log-format=json
+            - --namespace=
+            - --stream-logs=true
+            - --external-logs=
+          env:
+            - name: INSTALLED_NAMESPACE
+              valueFrom:
+                fieldRef:
+                  fieldPath: metadata.namespace
+          image: gcr.io/tekton-releases/github.com/tektoncd/dashboard/cmd/dashboard:v0.27.0@sha256:d57860eb2ff1f97ca1b657eda6ec640584ec8b756e80a5f888c98b7b056c14c1
+          livenessProbe:
+            httpGet:
+              path: /health
+              port: 9097
+          name: tekton-dashboard
+          ports:
+            - containerPort: 9097
+          readinessProbe:
+            httpGet:
+              path: /readiness
+              port: 9097
+      nodeSelector:
+        kubernetes.io/os: linux
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 65532
+      serviceAccountName: tekton-dashboard
+      volumes: []
+
+---
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  labels:
+    app.kubernetes.io/component: dashboard
+    app.kubernetes.io/instance: default
+    app.kubernetes.io/part-of: tekton-dashboard
+    rbac.dashboard.tekton.dev/subject: tekton-dashboard
+  name: tekton-dashboard-tenant
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: tekton-dashboard-tenant
+subjects:
+  - kind: ServiceAccount
+    name: tekton-dashboard
+    namespace: tekton-pipelines

contrib/ci-builders/tekton/tekton-labs/tasks/zcash-build-bench.yml

@@ -0,0 +1,205 @@
+---
+apiVersion: tekton.dev/v1beta1
+kind: Task
+metadata:
+  name: zcash-build-bench
+spec:    
+  params:
+    - name: JOBS
+      default: "4"
+      type: string
+    - name: BUILD_FOR_HOST
+      default: x86_64-pc-linux-gnu
+      type: string
+    - name: CONFIGURE_FLAGS
+      default: ""
+      type: string
+    - name: BUILD_CONTAINER
+      default: electriccoinco/zcashd-bench-debian10
+      type: string
+    - name: TEST_TARGET
+      default: ""
+      type: string
+  resources:
+    inputs:
+      - name: source
+        type: git
+  steps:
+    - name: build
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cd workspace/source
+        echo $(git rev-parse HEAD)
+        echo $(git rev-parse --short HEAD)
+        
+        if [ "$(params.BUILD_FOR_HOST)" == "x86_64-apple-darwin11" ]
+        then
+            mkdir -p depends/SDKs
+            curl -fs https://ecc.mypinata.cloud/ipfs/QmeSwckvSCGL9SXGdEHoAyqXdzD7T9HYTwsC34Bj5EVDF5 \
+              -o depends/SDKs/Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz
+            tar zxvf depends/SDKs/Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz \
+              -C depends/SDKs
+        fi              
+
+        CONFIGURE_FLAGS=$(params.CONFIGURE_FLAGS) HOST=$(params.BUILD_FOR_HOST) ./zcutil/build.sh -j$(params.JOBS)
+
+    - name: bench-sleep
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        python -m pip install pyblake2 pyflakes python-qpid-proton pyutil pyzmq requests simplejson
+        
+        cp -a /home/.zcash-params $HOME/
+        cp -r /home/benchmark-200k-UTXOs.tar.xz /workspace/source
+        cp -r /home/block-107134.tar.xz /workspace/source
+        cd /workspace/source
+
+        ./qa/zcash/performance-measurements.sh time sleep | jq  '[.[]|.runningtime | tonumber] | add / (. | length | tonumber)'
+
+    - name: bench-createsaplingspend
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cp -a /home/.zcash-params $HOME/
+        cp -r /home/benchmark-200k-UTXOs.tar.xz /workspace/source
+        cp -r /home/block-107134.tar.xz /workspace/source
+        cd /workspace/source
+
+        ./qa/zcash/performance-measurements.sh time createsaplingspend | jq  '[.[]|.runningtime | tonumber] | add / (. | length | tonumber)'
+
+    - name: bench-verifysaplingspend
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cp -a /home/.zcash-params $HOME/
+        cp -r /home/benchmark-200k-UTXOs.tar.xz /workspace/source
+        cp -r /home/block-107134.tar.xz /workspace/source
+        cd /workspace/source
+
+        ./qa/zcash/performance-measurements.sh time verifysaplingspend | jq  '[.[]|.runningtime | tonumber] | add / (. | length | tonumber)'
+
+    - name: bench-createsaplingoutput
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cp -a /home/.zcash-params $HOME/
+        cp -r /home/benchmark-200k-UTXOs.tar.xz /workspace/source
+        cp -r /home/block-107134.tar.xz /workspace/source
+        cd /workspace/source
+
+        ./qa/zcash/performance-measurements.sh time createsaplingoutput | jq '[.[]|.runningtime | tonumber] | add / (. | length | tonumber)'
+
+    - name: bench-verifysaplingoutput
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cp -a /home/.zcash-params $HOME/
+        cp -r /home/benchmark-200k-UTXOs.tar.xz /workspace/source
+        cp -r /home/block-107134.tar.xz /workspace/source
+        cd /workspace/source
+
+        ./qa/zcash/performance-measurements.sh time verifysaplingoutput | jq '[.[]|.runningtime | tonumber] | add / (. | length | tonumber)'
+
+    - name: bench-createjoinsplit
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cp -a /home/.zcash-params $HOME/
+        cp -r /home/benchmark-200k-UTXOs.tar.xz /workspace/source
+        cp -r /home/block-107134.tar.xz /workspace/source
+        cd /workspace/source
+
+        ./qa/zcash/performance-measurements.sh time createjoinsplit | jq '[.[]|.runningtime | tonumber] | add / (. | length | tonumber)'
+
+    - name: bench-verifyjoinsplit
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cp -a /home/.zcash-params $HOME/
+        cp -r /home/benchmark-200k-UTXOs.tar.xz /workspace/source
+        cp -r /home/block-107134.tar.xz /workspace/source
+        cd /workspace/source
+
+        ./qa/zcash/performance-measurements.sh time verifyjoinsplit | jq '[.[]|.runningtime | tonumber] | add / (. | length | tonumber)'
+
+    - name: bench-verifyequihash
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cp -a /home/.zcash-params $HOME/
+        cp -r /home/benchmark-200k-UTXOs.tar.xz /workspace/source
+        cp -r /home/block-107134.tar.xz /workspace/source
+        cd /workspace/source
+
+        ./qa/zcash/performance-measurements.sh time verifyequihash | jq '[.[]|.runningtime | tonumber] | add / (. | length | tonumber)'
+
+    - name: bench-connectblockslow
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cp -a /home/.zcash-params $HOME/
+        cp -r /home/benchmark-200k-UTXOs.tar.xz /workspace/source
+        cp -r /home/block-107134.tar.xz /workspace/source
+        cd /workspace/source
+
+        ./qa/zcash/performance-measurements.sh time connectblockslow | sed -n '2,$p' | jq '[.[]|.runningtime | tonumber] | add / (. | length | tonumber)'
+
+    - name: bench-loadwallet-200k-recv
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cp -a /home/.zcash-params $HOME/
+        cp -r /home/benchmark-200k-UTXOs.tar.xz /workspace/source
+        cp -r /home/block-107134.tar.xz /workspace/source
+        cd /workspace/source
+
+        ./qa/zcash/performance-measurements.sh time loadwallet 200k-recv | sed 1d | jq '[.[]|.runningtime | tonumber] | add / (. | length | tonumber)'
+
+    - name: bench-loadwallet-200k-send
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cp -a /home/.zcash-params $HOME/
+        cp -r /home/benchmark-200k-UTXOs.tar.xz /workspace/source
+        cp -r /home/block-107134.tar.xz /workspace/source
+        cd /workspace/source
+
+        ./qa/zcash/performance-measurements.sh time loadwallet 200k-send | sed 1d | jq '[.[]|.runningtime | tonumber] | add / (. | length | tonumber)'
+
+    - name: bench-listunspent-200k-recv
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cp -a /home/.zcash-params $HOME/
+        cp -r /home/benchmark-200k-UTXOs.tar.xz /workspace/source
+        cp -r /home/block-107134.tar.xz /workspace/source
+        cd /workspace/source
+
+        ./qa/zcash/performance-measurements.sh time listunspent 200k-recv | sed 1d | jq '[.[]|.runningtime | tonumber] | add / (. | length | tonumber)'
+
+    - name: bench-listunspent-200k-send
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cp -a /home/.zcash-params $HOME/
+        cp -r /home/benchmark-200k-UTXOs.tar.xz /workspace/source
+        cp -r /home/block-107134.tar.xz /workspace/source
+        cd /workspace/source
+
+        ./qa/zcash/performance-measurements.sh time listunspent 200k-send | sed 1d | jq '[.[]|.runningtime | tonumber] | add / (. | length | tonumber)'
+

contrib/ci-builders/tekton/tekton-labs/tasks/zcash-build-test.yml

@@ -0,0 +1,57 @@
+---
+apiVersion: tekton.dev/v1beta1
+kind: Task
+metadata:
+  name: zcash-build-test
+spec:    
+  params:
+    - name: JOBS
+      default: "4"
+      type: string
+    - name: BUILD_FOR_HOST
+      default: x86_64-pc-linux-gnu
+      type: string
+    - name: CONFIGURE_FLAGS
+      default: ""
+      type: string
+    - name: BUILD_CONTAINER
+      default: electriccoinco/zcashd-worker-ubuntu2004v2
+      type: string
+    - name: TEST_TARGET
+      default: ""
+      type: string
+  resources:
+    inputs:
+      - name: source
+        type: git
+  steps:
+    - name: build
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cd workspace/source
+        echo $(git rev-parse HEAD)
+        echo $(git rev-parse --short HEAD)
+        
+        if [ "$(params.BUILD_FOR_HOST)" == "x86_64-apple-darwin11" ]
+        then
+            mkdir -p depends/SDKs
+            curl -fs https://ecc.mypinata.cloud/ipfs/QmeSwckvSCGL9SXGdEHoAyqXdzD7T9HYTwsC34Bj5EVDF5 \
+              -o depends/SDKs/Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz
+            tar zxvf depends/SDKs/Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz \
+              -C depends/SDKs
+        fi              
+
+        CONFIGURE_FLAGS=$(params.CONFIGURE_FLAGS) HOST=$(params.BUILD_FOR_HOST) ./zcutil/build.sh -j$(params.JOBS)
+
+    - name: test
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        python -m pip install pyblake2 pyflakes python-qpid-proton pyutil pyzmq requests simplejson
+        cp -a /home/.zcash-params $HOME/
+        echo $(git rev-parse HEAD)
+        echo $(git rev-parse --short HEAD)
+        HOST=x86_64-pc-linux-gnu /workspace/source/qa/zcash/full_test_suite.py $(params.TEST_TARGET)

contrib/ci-builders/tekton/tekton-labs/tasks/zcash-build.yml

@@ -0,0 +1,51 @@
+---
+apiVersion: tekton.dev/v1beta1
+kind: Task
+metadata:
+  name: zcash-build
+spec:    
+  params:
+    - name: JOBS
+      default: "4"
+      type: string
+    - name: BUILD_FOR_HOST
+      default: x86_64-pc-linux-gnu
+      type: string
+    - name: CONFIGURE_FLAGS
+      default: ""
+      type: string
+    - name: BUILD_CONTAINER
+      default: electriccoinco/zcashd-worker-ubuntu2004v2
+      type: string
+  resources:
+    inputs:
+      - name: source
+        type: git
+  steps:
+    - name: setup-venv
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -e -o pipefail
+        python3 -m venv /venv/zcash-build-venv
+        source /venv/zcash-build-venv/bin/activate
+        python -m pip install pyblake2 pyflakes python-qpid-proton pyutil pyzmq requests simplejson
+        
+    - name: build
+      image: $(params.BUILD_CONTAINER)
+      script: |
+        #!/bin/bash
+        set -o pipefail
+        cd workspace/source
+        echo $(git rev-parse HEAD)
+        echo $(git rev-parse --short HEAD)
+        if [ "$(params.BUILD_FOR_HOST)" == "x86_64-apple-darwin11" ]
+        then
+            mkdir -p depends/SDKs
+            curl -fs https://ecc.mypinata.cloud/ipfs/QmeSwckvSCGL9SXGdEHoAyqXdzD7T9HYTwsC34Bj5EVDF5 \
+              -o depends/SDKs/Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz
+            tar zxvf depends/SDKs/Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz \
+              -C depends/SDKs
+        fi              
+
+        CONFIGURE_FLAGS=$(params.CONFIGURE_FLAGS) HOST=$(params.BUILD_FOR_HOST) ./zcutil/build.sh -j$(params.JOBS)