diff --git a/termux-shared/src/main/java/com/termux/shared/reflection/ReflectionUtils.java b/termux-shared/src/main/java/com/termux/shared/reflection/ReflectionUtils.java
index fadcb7d9..10886a41 100644
--- a/termux-shared/src/main/java/com/termux/shared/reflection/ReflectionUtils.java
+++ b/termux-shared/src/main/java/com/termux/shared/reflection/ReflectionUtils.java
@@ -77,6 +77,8 @@ public class ReflectionUtils {
     /**
      * Get a value for a {@link Field} of an object for the specified class.
      *
+     * Trying to access {@code null} fields will result in {@link NoSuchFieldException}.
+     *
      * @param clazz The {@link Class} to which the object belongs to.
      * @param fieldName The name of the {@link Field}.
      * @param object The {@link Object} instance from which to get the field value.
diff --git a/termux-shared/src/main/java/com/termux/shared/termux/TermuxBootstrap.java b/termux-shared/src/main/java/com/termux/shared/termux/TermuxBootstrap.java
index 50ccef15..add3f040 100644
--- a/termux-shared/src/main/java/com/termux/shared/termux/TermuxBootstrap.java
+++ b/termux-shared/src/main/java/com/termux/shared/termux/TermuxBootstrap.java
@@ -1,20 +1,29 @@
 package com.termux.shared.termux;
 
+import android.content.Context;
+
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.termux.shared.logger.Logger;
+import com.termux.shared.termux.TermuxConstants.TERMUX_APP;
 
 public class TermuxBootstrap {
 
     private static final String LOG_TAG = "TermuxBootstrap";
 
+    /** The field name used by Termux app to store package variant in
+     * {@link TERMUX_APP#BUILD_CONFIG_CLASS_NAME} class. */
+    public static final String BUILD_CONFIG_FIELD_TERMUX_PACKAGE_VARIANT = "TERMUX_PACKAGE_VARIANT";
+
+
     /** The {@link PackageManager} for the bootstrap in the app APK added in app/build.gradle. */
     public static PackageManager TERMUX_APP_PACKAGE_MANAGER;
 
     /** The {@link PackageVariant} for the bootstrap in the app APK added in app/build.gradle. */
     public static PackageVariant TERMUX_APP_PACKAGE_VARIANT;
 
-    /** Set name as app wide night mode value. */
+    /** Set {@link #TERMUX_APP_PACKAGE_VARIANT} and {@link #TERMUX_APP_PACKAGE_MANAGER} from {@code packageVariantName} passed. */
     public static void setTermuxPackageManagerAndVariant(@Nullable String packageVariantName) {
         TERMUX_APP_PACKAGE_VARIANT = PackageVariant.variantOf(packageVariantName);
         if (TERMUX_APP_PACKAGE_VARIANT == null) {
@@ -34,6 +43,42 @@ public class TermuxBootstrap {
         Logger.logVerbose(LOG_TAG, "Set TERMUX_APP_PACKAGE_MANAGER to \"" + TERMUX_APP_PACKAGE_MANAGER + "\"");
     }
 
+    /**
+     * Set {@link #TERMUX_APP_PACKAGE_VARIANT} and {@link #TERMUX_APP_PACKAGE_MANAGER} with the
+     * {@link #BUILD_CONFIG_FIELD_TERMUX_PACKAGE_VARIANT} field value from the
+     * {@link TERMUX_APP#BUILD_CONFIG_CLASS_NAME} class of the Termux app APK installed on the device.
+     * This can only be used by apps that share `sharedUserId` with the Termux app and can be used
+     * by plugin apps.
+     *
+     * @param currentPackageContext The context of current package.
+     */
+    public static void setTermuxPackageManagerAndVariantFromTermuxApp(@NonNull Context currentPackageContext) {
+        String packageVariantName = getTermuxAppBuildConfigPackageVariantFromTermuxApp(currentPackageContext);
+        if (packageVariantName != null) {
+            TermuxBootstrap.setTermuxPackageManagerAndVariant(packageVariantName);
+        } else {
+            Logger.logError(LOG_TAG, "Failed to set TERMUX_APP_PACKAGE_VARIANT and TERMUX_APP_PACKAGE_MANAGER from the termux app");
+        }
+    }
+
+    /**
+     * Get {@link #BUILD_CONFIG_FIELD_TERMUX_PACKAGE_VARIANT} field value from the
+     * {@link TERMUX_APP#BUILD_CONFIG_CLASS_NAME} class of the Termux app APK installed on the device.
+     * This can only be used by apps that share `sharedUserId` with the Termux app.
+     *
+     * @param currentPackageContext The context of current package.
+     * @return Returns the field value, otherwise {@code null} if an exception was raised or failed
+     * to get termux app package context.
+     */
+    public static String getTermuxAppBuildConfigPackageVariantFromTermuxApp(@NonNull Context currentPackageContext) {
+        try {
+            return (String) TermuxUtils.getTermuxAppAPKBuildConfigClassField(currentPackageContext, BUILD_CONFIG_FIELD_TERMUX_PACKAGE_VARIANT);
+        } catch (Exception e) {
+            Logger.logStackTraceWithMessage(LOG_TAG, "Failed to get \"" + BUILD_CONFIG_FIELD_TERMUX_PACKAGE_VARIANT + "\" value from \"" + TERMUX_APP.BUILD_CONFIG_CLASS_NAME + "\" class", e);
+            return null;
+        }
+    }
+
 
 
     /** Is {@link PackageManager#APT} set as {@link #TERMUX_APP_PACKAGE_MANAGER}. */
diff --git a/termux-shared/src/main/java/com/termux/shared/termux/TermuxConstants.java b/termux-shared/src/main/java/com/termux/shared/termux/TermuxConstants.java
index 75c91b6c..ab142bf7 100644
--- a/termux-shared/src/main/java/com/termux/shared/termux/TermuxConstants.java
+++ b/termux-shared/src/main/java/com/termux/shared/termux/TermuxConstants.java
@@ -11,7 +11,7 @@ import java.util.Formatter;
 import java.util.List;
 
 /*
- * Version: v0.44.0
+ * Version: v0.45.0
  * SPDX-License-Identifier: MIT
  *
  * Changelog
@@ -248,6 +248,9 @@ import java.util.List;
  *
  * - 0.44.0 (2022-05-29)
  *      - Changed `TERMUX_APP.APPS_DIR_PATH` basename from `termux-app` to `com.termux`.
+ *
+ * - 0.45.0 (2022-06-01)
+ *      - Added `TERMUX_APP.BUILD_CONFIG_CLASS_NAME`.
  */
 
 /**
@@ -904,6 +907,9 @@ public final class TermuxConstants {
         /** termux-am socket file path */
         public static final String TERMUX_AM_SOCKET_FILE_PATH = APPS_DIR_PATH + "/termux-am/am.sock"; // Default: "/data/data/com.termux/files/apps/com.termux/termux-am/am.sock"
 
+        /** Termux app BuildConfig class name */
+        public static final String BUILD_CONFIG_CLASS_NAME = TERMUX_PACKAGE_NAME + ".BuildConfig"; // Default: "com.termux.BuildConfig"
+
 
         /** Termux app core activity name. */
         public static final String TERMUX_ACTIVITY_NAME = TERMUX_PACKAGE_NAME + ".app.TermuxActivity"; // Default: "com.termux.app.TermuxActivity"
diff --git a/termux-shared/src/main/java/com/termux/shared/termux/TermuxUtils.java b/termux-shared/src/main/java/com/termux/shared/termux/TermuxUtils.java
index cc60b1cf..42208ac1 100644
--- a/termux-shared/src/main/java/com/termux/shared/termux/TermuxUtils.java
+++ b/termux-shared/src/main/java/com/termux/shared/termux/TermuxUtils.java
@@ -14,6 +14,7 @@ import com.termux.shared.R;
 import com.termux.shared.android.AndroidUtils;
 import com.termux.shared.data.DataUtils;
 import com.termux.shared.file.FileUtils;
+import com.termux.shared.reflection.ReflectionUtils;
 import com.termux.shared.shell.command.runner.app.AppShell;
 import com.termux.shared.termux.file.TermuxFileUtils;
 import com.termux.shared.logger.Logger;
@@ -21,6 +22,7 @@ import com.termux.shared.markdown.MarkdownUtils;
 import com.termux.shared.shell.command.ExecutionCommand;
 import com.termux.shared.errors.Error;
 import com.termux.shared.android.PackageUtils;
+import com.termux.shared.termux.TermuxConstants.TERMUX_APP;
 import com.termux.shared.termux.shell.TermuxShellEnvironmentClient;
 
 import org.apache.commons.io.IOUtils;
@@ -218,6 +220,59 @@ public class TermuxUtils {
 
 
 
+    /**
+     * Get a field value from the {@link TERMUX_APP#BUILD_CONFIG_CLASS_NAME} class of the Termux app
+     * APK installed on the device.
+     * This can only be used by apps that share `sharedUserId` with the Termux app.
+     *
+     * This is a wrapper for {@link #getTermuxAppAPKClassField(Context, String, String)}.
+     *
+     * @param currentPackageContext The context of current package.
+     * @param fieldName The name of the field to get.
+     * @return Returns the field value, otherwise {@code null} if an exception was raised or failed
+     * to get termux app package context.
+     */
+    public static Object getTermuxAppAPKBuildConfigClassField(@NonNull Context currentPackageContext,
+                                                              @NonNull String fieldName) {
+        return getTermuxAppAPKClassField(currentPackageContext, TERMUX_APP.BUILD_CONFIG_CLASS_NAME, fieldName);
+    }
+
+    /**
+     * Get a field value from a class of the Termux app APK installed on the device.
+     * This can only be used by apps that share `sharedUserId` with the Termux app.
+     *
+     * This is done by getting first getting termux app package context and then getting in class
+     * loader (instead of current app's) that contains termux app class info, and then using that to
+     * load the required class and then getting required field from it.
+     *
+     * Note that the value returned is from the APK file and not the current value loaded in Termux
+     * app process, so only default values will be returned.
+     *
+     * Trying to access {@code null} fields will result in {@link NoSuchFieldException}.
+     *
+     * @param currentPackageContext The context of current package.
+     * @param clazzName The name of the class from which to get the field.
+     * @param fieldName The name of the field to get.
+     * @return Returns the field value, otherwise {@code null} if an exception was raised or failed
+     * to get termux app package context.
+     */
+    public static Object getTermuxAppAPKClassField(@NonNull Context currentPackageContext,
+                                                   @NonNull String clazzName, @NonNull String fieldName) {
+        try {
+            Context termuxPackageContext = TermuxUtils.getTermuxPackageContextWithCode(currentPackageContext);
+            if (termuxPackageContext == null)
+                return null;
+
+            Class<?> clazz = termuxPackageContext.getClassLoader().loadClass(clazzName);
+            return ReflectionUtils.invokeField(clazz, fieldName, null).value;
+        } catch (Exception e) {
+            Logger.logStackTraceWithMessage(LOG_TAG, "Failed to get \"" + fieldName + "\" value from \"" + clazzName + "\" class", e);
+            return null;
+        }
+    }
+
+
+
     /**
      * Send the {@link TermuxConstants#BROADCAST_TERMUX_OPENED} broadcast to notify apps that Termux
      * app has been opened.