diff --git a/packages/nextjs/vercel/install-sentry-from-branch.sh b/packages/nextjs/vercel/install-sentry-from-branch.sh
index 5933b5a1d675..f54c1ab7ce30 100644
--- a/packages/nextjs/vercel/install-sentry-from-branch.sh
+++ b/packages/nextjs/vercel/install-sentry-from-branch.sh
@@ -1,9 +1,10 @@
 # SCRIPT TO INCLUDE AS PART OF A VERCEL-DEPLOYED PROJECT, SO THAT IT USES A BRANCH FROM THE SDK REPO
 # USE `yarn vercel:project <path-to-project>` TO HAVE IT AUTOMATICALLY ADDED TO YOUR PROJECT
 
-# CUSTOM INSTALL COMMAND FOR PROJECT ON VERCEL: `source .sentry/install-sentry-from-branch.sh`
+# CUSTOM INSTALL COMMAND FOR PROJECT ON VERCEL: `bash .sentry/install-sentry-from-branch.sh`
 
 PROJECT_DIR=$(pwd)
+REPO_DIR="${PROJECT_DIR}/sentry-javascript"
 
 # Set BRANCH_NAME as an environment variable
 source .sentry/set-branch-name.sh
@@ -11,9 +12,13 @@ source .sentry/set-branch-name.sh
 echo " "
 echo "CLONING SDK REPO"
 git clone https://github.com/getsentry/sentry-javascript.git
-cd sentry-javascript
+
+echo " "
+echo "MOVING INTO REPO DIRECTORY AND CHECKING OUT BRANCH"
+cd $REPO_DIR
 git checkout $BRANCH_NAME
-echo "Latest commit: $(git log --format="%C(auto) %h - %s" | head -n 1)"
+
+echo "LATEST COMMIT: $(git log --format="%C(auto) %h - %s" | head -n 1)"
 
 echo " "
 echo "INSTALLING SDK DEPENDENCIES"
@@ -22,13 +27,65 @@ yarn --prod false
 
 echo " "
 echo "BUILDING SDK"
-# we need to build es5 versions because `next.config.js` calls `require` on the SDK (to get `withSentryConfig`) and
+# We need to build es5 versions because `next.config.js` calls `require` on the SDK (to get `withSentryConfig`) and
 # therefore it looks for `dist/index.js`
 yarn build:es5
-# we need to build esm versions because that's what `next` actually uses when it builds the app
+# We need to build esm versions because that's what `next` actually uses when it builds the app
 yarn build:esm
+
+# Set all packages in the repo to point to their siblings as file dependencies. That way, when we install the local copy
+# of @sentry/nextjs, it'll pull the local copy of each of its @sentry/* dependents. This mimics what Lerna does with
+# symlinks, just with file dependencies (which we have to use because linking seems to lead to module resolution
+# errors).
+echo " "
+echo "POINTING SIBLING DEPENDENCIES IN PACKAGE.JSON AT LOCAL DIRECTORIES"
+PACKAGES_DIR="$REPO_DIR/packages"
+# Escape all of the slashes in the path for use in sed
+ESCAPED_PACKAGES_DIR=$(echo $PACKAGES_DIR | sed s/'\/'/'\\\/'/g)
+
+PACKAGE_NAMES=$(ls PACKAGES_DIR)
+
+# Modify each package's package.json file by searching in it for sentry dependencies from the monorepo and, for each
+# sibling dependency found, replacing the version number with a file dependency pointing to the sibling itself (so
+# `"@sentry/utils": "6.9.0"` becomes `"@sentry/utils": "file:/abs/path/to/sentry-javascript/packages/utils"`)
+for package in $PACKAGE_NAMES; do
+  # Within a given package.json file, search for each of the other packages in turn, and if found, make the replacement
+  for package_dep in $PACKAGE_NAMES; do
+    sed -Ei /"@sentry\/${package_dep}"/s/"[0-9]+\.[0-9]+\.[0-9]+"/"file:${ESCAPED_PACKAGES_DIR}\/${package_dep}"/ ${PACKAGES_DIR}/${package}/package.json
+  done
+done
+
+echo " "
+echo "MOVING BACK TO PROJECT DIRECTORY"
 cd $PROJECT_DIR
 
+# TODO move this into `yarn vercel:project` script, accounting for differences in SDK repo location between running the
+# test app locally and on vercel
+echo " "
+echo "PATCHING SENTRY.SERVER.CONFIG.JS AND SENTRY.CLIENT.CONFIG.JS"
+echo "Removing frame limit on stacktraces"
+echo "Tagging events with $(vercel) tag"
+echo "Tagging events with SDK repo's most recent commit message"
+echo "Tagging events with test project repo's most recent commit message"
+
+INFINITE_STACKTRACE_CODE="
+Error.stackTraceLimit = Infinity;
+  "
+
+SDK_COMMIT_MESSAGE=$(cd sentry-javascript && git log --format="%C(auto)%s" | head -n 1)
+CONFIGURE_SCOPE_CODE="
+Sentry.configureScope(scope => {
+  if (process.env.VERCEL) {
+    scope.setTag('vercel', true);
+  }
+  scope.setTag('commitMessage', process.env.VERCEL_GIT_COMMIT_MESSAGE);
+  scope.setTag('sdkCommitMessage', \"$SDK_COMMIT_MESSAGE\");
+});
+  "
+
+echo "$INFINITE_STACKTRACE_CODE" "$CONFIGURE_SCOPE_CODE" >>sentry.server.config.js
+echo "$INFINITE_STACKTRACE_CODE" "$CONFIGURE_SCOPE_CODE" >>sentry.client.config.js
+
 # Add built SDK as a file dependency. This has the side effect of forcing yarn to install all of the other dependencies,
 # saving us the trouble of needing to call `yarn` separately after this
 echo " "
@@ -38,9 +95,9 @@ yarn add file:sentry-javascript/packages/nextjs
 
 # In case for any reason we ever need to link the local SDK rather than adding it as a file dependency:
 
-# for abs_package_path in ${PROJECT_DIR}/sentry-javascript/packages/*; do
+# echo " "
+# echo "LINKING LOCAL SDK INTO PROJECT"
 
-# # link the built packages into project dependencies
 # for abs_package_path in sentry-javascript/packages/*; do
 #   package=$(basename $abs_package_path)
 
diff --git a/packages/nextjs/vercel/instructions.md b/packages/nextjs/vercel/instructions.md
index 333df8a73db9..530bc367d58e 100644
--- a/packages/nextjs/vercel/instructions.md
+++ b/packages/nextjs/vercel/instructions.md
@@ -33,7 +33,7 @@ commit (but not push) this change.
 
 Go into your project settings on Vercel and change the install command to
 
-  `source .sentry/install-sentry-from-branch.sh`.
+  `bash .sentry/install-sentry-from-branch.sh`.
 
 If you're using bundle analyzer, change the build command to
 
diff --git a/packages/nextjs/vercel/make-project-use-current-branch.sh b/packages/nextjs/vercel/make-project-use-current-branch.sh
index f0ebe9a3b13d..fb28d99178e1 100644
--- a/packages/nextjs/vercel/make-project-use-current-branch.sh
+++ b/packages/nextjs/vercel/make-project-use-current-branch.sh
@@ -58,5 +58,5 @@ cd $NEXTJS_SDK_DIR
 echo " "
 echo "SUCCESS!"
 echo "Your project will now use this branch of the SDK repo when deployed to Vercel. If you haven't done so already, go to your project settings in Vercel and set a custom install command:"
-echo "  $(source .sentry/install-sentry-from-branch.sh)"
+echo "  bash .sentry/install-sentry-from-branch.sh"
 echo " "