tradingview: fix updateScript

pkgs/by-name/tr/tradingview/update.sh

@@ -1,15 +1,15 @@
 #!/usr/bin/env nix-shell
-#! nix-shell -i bash -p curl jq git gnused gnugrep
+#! nix-shell -i bash -p curl jq gitMinimal gnused gnugrep
 
 #
 # Get latest version of TradingView from Snapcraft.
 #
 
 snap_info=($(
-  curl -s -H 'X-Ubuntu-Series: 16' \
-    'https://api.snapcraft.io/api/v1/snaps/details/tradingview' \
-  | jq --raw-output \
-    '.revision,.download_sha512,.version,.last_updated'
+  curl --silent --header 'X-Ubuntu-Series: 16' \
+    'https://api.snapcraft.io/api/v1/snaps/details/tradingview' |
+    jq --raw-output \
+      '.revision,.download_sha512,.version,.last_updated'
 ))
 
 # "revision" is the actual version identifier; "version" is for human consumption.
@@ -27,10 +27,7 @@ echo "Latest release is $upstream_version from $last_updated."
 
 nixpkgs="$(git rev-parse --show-toplevel)"
 tradingview_nix="$nixpkgs/pkgs/by-name/tr/tradingview/package.nix"
-current_nix_version=$(
-  grep 'version\s*=' "$tradingview_nix" \
-  | sed -Ene 's/.*"(.*)".*/\1/p'
-)
+current_nix_version=$(nix eval --raw --file . tradingview.version)
 
 echo "Current nix version: $current_nix_version"
 
@@ -50,21 +47,3 @@ sed --regexp-extended \
   -e 's#hash\s*=\s*"[^"]*"\s*;#hash = "'"${sri}"'";#' \
   -e 's/version\s*=\s*".*"\s*;/version = "'"${upstream_version}"'";/' \
   -i "$tradingview_nix"
-
-#
-# Attempt a build.
-#
-
-export NIXPKGS_ALLOW_UNFREE=1
-
-if ! nix-build -A tradingview "$nixpkgs"; then
-  echo "The updated TradingView failed to build."
-  exit 1
-fi
-
-#
-# Commit changes.
-#
-git add "$tradingview_nix"
-git commit -m "tradingview: ${current_nix_version} -> ${upstream_version}"
-