v2ray: move vendorSha256 outside and fix update script

pkgs/tools/networking/v2ray/default.nix

@@ -12,6 +12,8 @@ callPackage ./generic.nix (rec {
     sha256 = "1b0cxrpgkmgas7pwxglsvgcig8rnhffkf990b42z7awji5lw055v";
   };
 
+  vendorSha256 = "0d2qmnmlkl884ccg0qcd2yhfj0dwxnb9dz3cih7rcipz85w2f2rs";
+
   assets = {
     # MIT licensed
     "geoip.dat" = let

pkgs/tools/networking/v2ray/generic.nix

@@ -1,7 +1,7 @@
 { lib, linkFarm, buildGoModule, runCommand, makeWrapper
 
 # Version specific args
-, version, src, assets
+, version, src, assets, vendorSha256
 , ... }:
 
 let
@@ -13,7 +13,7 @@ let
     pname = "v2ray-core";
     inherit version src;
 
-    vendorSha256 = "0d2qmnmlkl884ccg0qcd2yhfj0dwxnb9dz3cih7rcipz85w2f2rs";
+    inherit vendorSha256;
 
     buildPhase = ''
       runHook preBuild

pkgs/tools/networking/v2ray/update.sh

@@ -1,11 +1,13 @@
 #!/usr/bin/env nix-shell
 #!nix-shell -i bash -p curl jq
 set -eo pipefail
+cd "$(dirname "${BASH_SOURCE[0]}")"
 
-version_nix=$(dirname "$0")/default.nix
-deps_nix=$(dirname "$0")/deps.nix
+version_nix=./default.nix
+deps_nix=./deps.nix
+nixpkgs=../../../..
 
-old_core_rev="v$(sed -En 's/.*\bversion = "(.*?)".*/\1/p' "$version_nix")"
+old_core_rev=$(sed -En 's/.*\bversion = "(.*?)".*/\1/p' "$version_nix")
 old_geoip_rev=$(sed -En 's/.*\bgeoipRev = "(.*?)".*/\1/p' "$version_nix")
 old_geosite_rev=$(sed -En 's/.*\bgeositeRev = "(.*?)".*/\1/p' "$version_nix")
 echo "Current version:" >&2
@@ -17,6 +19,7 @@ function fetch_latest_rev {
 }
 
 core_rev=$(fetch_latest_rev 'v2ray-core')
+core_rev=${core_rev:1}
 geoip_rev=$(fetch_latest_rev 'geoip')
 geosite_rev=$(fetch_latest_rev 'domain-list-community')
 echo "Latest version:" >&2
@@ -25,12 +28,13 @@ echo "core: $core_rev, geoip: $geoip_rev, geosite: $geosite_rev" >&2
 if [[ $core_rev != $old_core_rev ]]; then
     echo "Prefetching core..." >&2
     { read hash; read store_path; } < <(
-        nix-prefetch-url --unpack --print-path "https://github.com/v2ray/v2ray-core/archive/$core_rev.zip"
+        nix-prefetch-url --unpack --print-path "https://github.com/v2ray/v2ray-core/archive/v$core_rev.zip"
     )
 
     sed --in-place \
-        -e "s/\bversion = \".*\"/version = \"$(echo "$core_rev" | tail -c+2)\"/" \
+        -e "s/\bversion = \".*\"/version = \"$core_rev\"/" \
         -e "s/\bsha256 = \".*\"/sha256 = \"$hash\"/" \
+        -e "s/\bvendorSha256 = \".*\"/vendorSha256 = \"0000000000000000000000000000000000000000000000000000\"/" \
         "$version_nix"
 fi
 
@@ -51,3 +55,17 @@ if [[ $geosite_rev != $old_geosite_rev ]]; then
         -e "s/\bgeositeSha256 = \".*\"/geositeSha256 = \"$hash\"/" \
         "$version_nix"
 fi
+
+echo "Prebuilding..." >&2
+set +o pipefail
+vendorSha256=$(
+    nix-build "$nixpkgs" -A v2ray --no-out-link 2>&1 |
+    tee /dev/stderr |
+    sed -nE 's/.*got:\s*sha256:(\w+)$/\1/p'
+)
+[[ "$vendorSha256" ]]
+sed --in-place \
+    -e "s/vendorSha256 = \".*\"/vendorSha256 = \"$vendorSha256\"/" \
+    "$version_nix"
+
+echo "vendorSha256 updated" >&2