1 files changed, 98 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/applications/blockchains/wasabibackend/create_deps.sh b/nixpkgs/pkgs/applications/blockchains/wasabibackend/create_deps.sh
new file mode 100644
index 00000000000..814f92a341a
--- /dev/null
+++ b/nixpkgs/pkgs/applications/blockchains/wasabibackend/create_deps.sh
@@ -0,0 +1,98 @@
+#! /usr/bin/env nix-shell
+#! nix-shell -i bash -p dotnet-sdk_3 nixfmt
+
+# Run this script to generate deps.nix
+# ./create_deps.sh /path/to/package/source/checkout > deps.nix
+
+# TODO: consolidate with other dotnet deps generation scripts by which
+#       this script is inspired:
+#       - pkgs/servers/nosql/eventstore/create-deps.sh
+#       - pkgs/development/dotnet-modules/python-language-server/create_deps.sh
+
+URLBASE="https://www.nuget.org/api/v2/package"
+
+DEPS_HEADER="
+{ fetchurl }:
+let
+  nugetUrlBase = \"$URLBASE\";
+  fetchNuGet = { name, version, sha256 }: fetchurl {
+    inherit sha256;
+    url = \"\${nugetUrlBase}/\${name}/\${version}\";
+  };
+in ["
+
+DEPS_FOOTER="]"
+
+DEPS_TEMPLATE="
+(fetchNuGet {
+  name = \"%s\";
+  version = \"%s\";
+  sha256 = \"%s\";
+})"
+
+
+function generate_restore_log() {
+  checkout_path=$1
+  >&2 echo "generating restore log for $checkout_path..."
+  cd $checkout_path
+  dotnet nuget locals all --clear
+  dotnet restore -v normal --no-cache WalletWasabi.Backend -r linux-x64
+  cd -
+}
+
+function process_restore_log() {
+  restore_log=$1
+  >&2 echo "processing restore log..."
+  while read line; do
+    if echo $line | grep -q "^[[:space:]]*Installing"; then
+      l=$(echo $line | xargs)
+      l=${l#Installing }
+      l=${l%.}
+      echo $l
+    fi
+  done < $restore_log
+}
+
+function prefetch_deps() {
+  processed_log=$1
+  >&2 echo "prefetching deps..."
+  while read line; do
+    name=$(echo $line | cut -d' ' -f1)
+    >&2 echo "prefetching '$name' version: $version"
+    version=$(echo $line | cut -d' ' -f2)
+    hash=$(nix-prefetch-url "$URLBASE/$name/$version" 2>/dev/null)
+    echo "$name $version $hash"
+  done < $processed_log
+}
+
+function generate_deps_expression() {
+  packages=$1
+  >&2 echo "generating deps nix-expression..."
+  echo $DEPS_HEADER
+  while read line; do
+    name=$(echo $line | cut -d' ' -f1)
+    version=$(echo $line | cut -d' ' -f2)
+    hash=$(echo $line | cut -d' ' -f3)
+    printf "$DEPS_TEMPLATE" $name $version $hash
+  done < $packages
+  echo $DEPS_FOOTER
+}
+
+function main() {
+  checkout_path=$1
+  tmpdir=$(mktemp -d)
+  generate_restore_log $checkout_path > $tmpdir/restore.log
+  process_restore_log $tmpdir/restore.log > $tmpdir/processed.log
+  prefetch_deps $tmpdir/processed.log > $tmpdir/prefetched.log
+  generate_deps_expression $tmpdir/prefetched.log > $tmpdir/deps.nix
+  nixfmt $tmpdir/deps.nix
+  cat $tmpdir/deps.nix
+  rm -rf $tmpdir
+}
+
+if [ ! -d "$1" ]; then
+    >&2 echo "First argument must be a directory, the path to the package source checkout"
+    exit 1
+fi
+
+main $@