Impossilbe to downgrade gradle version during build

Question

As I was trying to provide fixes on our app developed with nativescript-vue 2.4 and nativescript 7.

The situation right now is gradle 7 no longer support some compiler features. For some obscure reason, I am unable to control which gradle version to use for compilation.

We have found solution for locking the gradle by specifing it in the build.gradle file.

I suspect there is a plugin currently overriding this to use the latest gradle version.

Here is the dependecies at play :

      "dependencies": {
    "axios": "0.19.2",
    "lodash": "4.17.15",
    "moment": "2.24.0",
    "nativescript-cardview": "3.2.0",
    "nativescript-clipboard": "1.2.0",
    "nativescript-dev-version": "./custom-hooks/version",
    "nativescript-fingerprint-auth": "7.0.2",
    "nativescript-geolocation": "^5.1.0",
    "nativescript-i18n": "0.4.1",
    "nativescript-iqkeyboardmanager": "1.5.1",
    "nativescript-keyboard-toolbar": "1.1.0",
    "nativescript-loading-indicator": "2.5.2",
    "nativescript-local-notifications": "4.2.1",
    "nativescript-lottie": "3.0.3",
    "nativescript-masked-text-field": "4.0.3",
    "nativescript-pager": "11.0.11",
    "nativescript-phone": "3.0.1",
    "nativescript-platform-css": "1.6.10",
    "nativescript-plugin-firebase": "10.6.3",
    "nativescript-preferences": "1.1.2",
    "nativescript-secure-storage": "2.6.0",
    "nativescript-theme-core": "1.0.6",
    "nativescript-toasty": "2.0.1",
    "nativescript-ui-listview": "8.2.0",
    "nativescript-vue": "2.4.0",
    "node-email-validation": "1.0.4",
    "tns-core-modules": "6.5.20",
    "vue-currency-filter": "3.4.3",
    "vue-i18n": "8.16.0",
    "vuex": "3.1.3"
  },
  "devDependencies": {
    "@babel/core": "7.9.0",
    "@babel/preset-env": "7.9.0",
    "babel-loader": "8.1.0",
    "eslint": "3.19.0",
    "eslint-config-airbnb-base": "11.3.2",
    "eslint-config-prettier": "2.10.0",
    "eslint-plugin-import": "2.20.1",
    "eslint-plugin-prettier": "2.7.0",
    "husky": "4.2.3",
    "nativescript": "7.2.1",
    "nativescript-dev-webpack": "1.5.1",
    "nativescript-vue-template-compiler": "2.3.0",
    "node-sass": "4.13.1",
    "prettier": "1.19.1",
    "tns-android": "6.5.3",
    "tns-ios": "6.5.4",
    "vue-loader": "15.9.1"
  },

Thanks for you help.