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2nd Week of 2022

Computer Science⚑

CICD⚑

Github Actions⚑

  • New: Store file as a secret.

    If you want to store a file (multiline, binary...) as a secret, first encode it with base64:

    base64 -i < {{ file_path }} | tr -d '\n' | xclip -i -selection clipboard

    Then paste it to a new secret. To restore the file diring the workflow, add:

    - name: restore file
  run: echo ${{ secrets.SECRET }} | base64 -d > {{ file_path }}

GNULinux⚑

Android⚑

  • New: Automatic version code generation.

    If you use semantic versioning and you don't want to increment the version code manually, replace the related config from android/app/build.gradle with:

    def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
    flutterVersionName = '1.0.0'
}

def semanticVersion = flutterVersionName.split('\\+')
def versionCore = semanticVersion[0]
def build = semanticVersion.length >= 2 ? semanticVersion[1].toInteger() : 0
def (major, minor, patch) = versionCore.tokenize('.').collect{it.toInteger()}
def flutterVersionCode = 1000000 * major + 10000 * minor + 100 * patch + build

    Then whenever pubspec.yaml version veriable changes and you build an APK or appbundle, the version code will be generated from it.

    Examples (version name -> version code):

    • 1.2.0 -> 1020000
    • 3.0.1+99 -> 3000199

  • New: Signing the APK/AppBundle.

    First of all, create a key if you don't have one with:

    keytool -genkey -v -keystore {{ keystore_file }} -alias {{ key_alias }} \
  -keyalg RSA -keysize 4096 -validity 10000

    Replace signingConfigs with:

      signingConfigs {
       release {
        keyAlias "$System.env.KEY_ALIAS"
        keyPassword "$System.env.KEY_PASSWORD"
        storeFile file("$System.env.KEY_PATH")
        storePassword "$System.env.STORE_PASSWORD"
    }
   }
   buildTypes {
       release {
           signingConfig signingConfigs.release
       }
   }

    Now, you can set the corresponding environment variables. This configuration is particularily useful if you want to have a CI build and sign the releases.

    Check store file as secret to save the generated keystore file as a CI secret.

Makefile⚑

  • New: Paralelize steps.

    Add the following lines to the beginning of the Makefile:

    NPROCS = $(shell grep -c 'processor' /proc/cpuinfo)
MAKEFLAGS += -j$(NPROCS)

Profanity⚑

  • New: Most common commands.

    • \msg {user@server.tld}: Start a conversation.
    • \roster add {user@server.tld}: Add user to contacts.
    • \sub request {user@server.tld}: Request presence updates from user.
    • \omemo start: Start an OMEMO session.

Wallabag⚑

  • New: Block all feeds except starred.

    location ~ /feed/sgn/{token}/(?!starred) {
   deny all;
   return 403;
  }

  • Correction: Missing placeholder.

Programming⚑

Material⚑

  • New: InkWell.

    Make a component clickable (with animations onf hover and tap):

    InkWell(
    onTap: () {
      // To do
    },
    child: Card(),
)

Other⚑

  • New: Request a new certificate.

    If there is no HTTP sever running:

    certbot certonly --standalone --preferred-challenges http-01 -d {{ domain }} --register-unsafely-without-email --agree-tos -n

    If there is an HTTP running:

    certonly --webroot -w {{ web_path_letsencrypt }} --preferred-challenges http-01 -d {{ domain }} --register-unsafely-without-email --agree-tos -n

  • Correction: Add missing entries to nav.

  • New: Upload to Play Store with CI.

    1. Create a principal in https://console.cloud.google.com/iam-admin/iam with the role Service Account User.
    2. Create and download a new key (JSON format) for the created principal.
    3. In Play Console go to Setup>API access and enable access for the created principal granting Admin (all permissions) to it.
    4. Add the key JSON content as a GitHub Secret (e.g., SERVICE_ACCOUNT_JSON).
    5. Add the following step to your workflow (after flutter build appbundle):
    - name: Upload to Google Play
  uses: r0adkll/upload-google-play@v1.0.15
  with:
    serviceAccountJsonPlainText: ${{ secrets.SERVICE_ACCOUNT_JSON }}
    packageName: {{ package_name }}
    releaseFiles: build/app/outputs/bundle/release/app-release.aab
    track: production