uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/applications/blockchains/solana/update.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i oil -p jq sd nix-prefetch-github ripgrep
+
+# TODO set to `verbose` or `extdebug` once implemented in oil
+shopt --set xtrace
+# we need failures inside of command subs to get the correct cargoSha256
+shopt --unset inherit_errexit
+
+const directory = $(dirname $0 | xargs realpath)
+const owner = "solana-labs"
+const repo = "solana"
+const latest_rev = $(curl -q https://api.github.com/repos/${owner}/${repo}/releases/latest | \
+  jq -r '.tag_name')
+const latest_version = $(echo $latest_rev | sd 'v' '')
+const current_version = $(jq -r '.version' $directory/pin.json)
+if ("$latest_version" === "$current_version") {
+  echo "solana is already up-to-date"
+  return 0
+} else {
+  const tarball_meta = $(nix-prefetch-github $owner $repo --rev "$latest_rev")
+  const tarball_hash = "sha256-$(echo $tarball_meta | jq -r '.sha256')"
+
+  jq ".version = \"$latest_version\" | \
+      .\"sha256\" = \"$tarball_hash\" | \
+      .\"cargoSha256\" = \"\"" $directory/pin.json | sponge $directory/pin.json
+
+  const new_cargo_sha256 = $(nix-build -A solana-testnet 2>&1 | \
+    tail -n 2 | \
+    head -n 1 | \
+    sd '\s+got:\s+' '')
+
+  jq ".cargoSha256 = \"$new_cargo_sha256\"" $directory/pin.json | sponge $directory/pin.json
+}