1 files changed, 88 insertions, 0 deletions
diff --git a/scripts/nuget-to-nix.sh b/scripts/nuget-to-nix.sh
new file mode 100755
index 0000000..7aa35fb
--- /dev/null
+++ b/scripts/nuget-to-nix.sh
@@ -0,0 +1,88 @@
+#!/bin/sh
+
+#patched version of nuget-to-nix to inherit env
+
+set -euo pipefail
+shopt -s nullglob
+
+#export PATH="@binPath@"
+# used for glob ordering of package names
+export LC_ALL=C
+
+if [ $# -eq 0 ]; then
+  >&2 echo "Usage: $0 <packages directory> [path to a file with a list of excluded packages] > deps.nix"
+  exit 1
+fi
+
+pkgs=$1
+tmp=$(realpath "$(mktemp -td nuget-to-nix.XXXXXX)")
+trap 'rm -r "$tmp"' EXIT
+
+excluded_list=$(realpath "${2:-/dev/null}")
+
+export DOTNET_NOLOGO=1
+export DOTNET_CLI_TELEMETRY_OPTOUT=1
+
+mapfile -t sources < <(dotnet nuget list source --format short | awk '/^E / { print $2 }')
+
+declare -A base_addresses
+
+for index in "${sources[@]}"; do
+  base_addresses[$index]=$(
+    curl --compressed --netrc -fsL "$index" | \
+      jq -r '.resources[] | select(."@type" == "PackageBaseAddress/3.0.0")."@id"')
+done
+
+echo "{ fetchNuGet }: ["
+
+cd "$pkgs"
+for package in *; do
+  cd "$package"
+  for version in *; do
+    id=$(xq -r .package.metadata.id "$version/$package".nuspec)
+
+    if grep -qxF "$id.$version.nupkg" "$excluded_list"; then
+      continue
+    fi
+
+    used_source="$(jq -r '.source' "$version"/.nupkg.metadata)"
+    for source in "${sources[@]}"; do
+      url="${base_addresses[$source]}$package/$version/$package.$version.nupkg"
+      if [[ "$source" == "$used_source" ]]; then
+        sha256="$(nix-hash --type sha256 --flat --base32 "$version/$package.$version".nupkg)"
+        found=true
+        break
+      else
+        if sha256=$(nix-prefetch-url "$url" 2>"$tmp"/error); then
+          # If multiple remote sources are enabled, nuget will try them all
+          # concurrently and use the one that responds first. We always use the
+          # first source that has the package.
+          echo "$package $version is available at $url, but was restored from $used_source" 1>&2
+          found=true
+          break
+        else
+          if ! grep -q 'HTTP error 404' "$tmp/error"; then
+            cat "$tmp/error" 1>&2
+            exit 1
+          fi
+        fi
+      fi
+    done
+
+    if ! ${found-false}; then
+      echo "couldn't find $package $version" >&2
+      exit 1
+    fi
+
+    if [[ "$source" != https://api.nuget.org/v3/index.json ]]; then
+      echo "  (fetchNuGet { pname = \"$id\"; version = \"$version\"; sha256 = \"$sha256\"; url = \"$url\"; })"
+    else
+      echo "  (fetchNuGet { pname = \"$id\"; version = \"$version\"; sha256 = \"$sha256\"; })"
+    fi
+  done
+  cd ..
+done
+
+cat << EOL
+]
+EOL