revert: Makefile buff-ification (#3700) (#3848)

This caused the following issues:
- Slim binaries weren't being updated.
- The coder.tar.ztd was misplaced.
- There is no coder.sha1 file with proper filenames.

This should be reintroduced in a future change with those fixes.

scripts/yarn_install.sh

@@ -5,37 +5,39 @@
 #
 # Usage: yarn_install.sh [optional extra flags]
 
-set -euo pipefail
-# shellcheck source=scripts/lib.sh
-source "$(dirname "${BASH_SOURCE[0]}")/lib.sh"
+set -eo pipefail
 
-cdroot
-cd site
+SCRIPT_DIR=$(dirname "${BASH_SOURCE[0]}")
+PROJECT_ROOT=$(cd "$SCRIPT_DIR" && git rev-parse --show-toplevel)
 
-yarn_flags=(
-	# Do not execute install scripts
-	# TODO: check if build works properly with this enabled
-	# --ignore-scripts
+(
+	cd "$PROJECT_ROOT/site"
 
-	# Check if existing node_modules are valid
-	# TODO: determine if this is necessary
-	# --check-files
-)
+	yarn_flags=(
+		# Do not execute install scripts
+		# TODO: check if build works properly with this enabled
+		# --ignore-scripts
 
-if [[ -n ${CI:-} ]]; then
-	yarn_flags+=(
-		# Install dependencies from lockfile, ensuring builds are fully
-		# reproducible
-		--frozen-lockfile
-		# Suppress progress information
-		--silent
-		# Disable interactive prompts for build
-		--non-interactive
+		# Check if existing node_modules are valid
+		# TODO: determine if this is necessary
+		# --check-files
 	)
-fi
 
-# Append whatever is specified on the command line
-yarn_flags+=("$@")
+	if [[ -n ${CI:-} ]]; then
+		yarn_flags+=(
+			# Install dependencies from lockfile, ensuring builds are fully
+			# reproducible
+			--frozen-lockfile
+			# Suppress progress information
+			--silent
+			# Disable interactive prompts for build
+			--non-interactive
+		)
+	fi
 
-echo "+ yarn install ${yarn_flags[*]}"
-yarn install "${yarn_flags[@]}"
+	# Append whatever is specified on the command line
+	yarn_flags+=("$@")
+
+	echo "+ yarn install ${yarn_flags[*]}"
+	yarn install "${yarn_flags[@]}"
+)