1 files changed, 41 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/misc/emulators/ryujinx/fetch-deps.sh b/nixpkgs/pkgs/misc/emulators/ryujinx/fetch-deps.sh
new file mode 100755
index 00000000000..ce9873a1692
--- /dev/null
+++ b/nixpkgs/pkgs/misc/emulators/ryujinx/fetch-deps.sh
@@ -0,0 +1,41 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl jq common-updater-scripts dotnet-sdk_3
+set -eo pipefail
+cd "$(dirname "${BASH_SOURCE[0]}")"
+
+deps_file="$(realpath "./deps.nix")"
+
+# Setup empty nuget package folder to force reinstall.
+mkdir ./nuget_tmp.packages
+cat >./nuget_tmp.config <<EOF
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <add key="nuget" value="https://api.nuget.org/v3/index.json" />
+  </packageSources>
+  <config>
+    <add key="globalPackagesFolder" value="$(realpath ./nuget_tmp.packages)" />
+  </config>
+</configuration>
+EOF
+
+dotnet restore Ryujinx.sln --configfile ./nuget_tmp.config
+
+echo "{ fetchNuGet }: [" >"$deps_file"
+while read pkg_spec; do
+  { read pkg_name; read pkg_version; } < <(
+    # Build version part should be ignored: `3.0.0-beta2.20059.3+77df2220` -> `3.0.0-beta2.20059.3`
+    sed -nE 's/.*<id>([^<]*).*/\1/p; s/.*<version>([^<+]*).*/\1/p' "$pkg_spec")
+  pkg_sha256="$(nix-hash --type sha256 --flat --base32 "$(dirname "$pkg_spec")"/*.nupkg)"
+  cat >>"$deps_file" <<EOF
+  (fetchNuGet {
+    name = "$pkg_name";
+    version = "$pkg_version";
+    sha256 = "$pkg_sha256";
+  })
+EOF
+done < <(find ./nuget_tmp.packages -name '*.nuspec' | sort)
+echo "]" >>"$deps_file"
+
+popd
+rm -r "$src"