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/development/tools/rust/rust-analyzer/update.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl jq nix-prefetch libarchive
+# shellcheck shell=bash
+set -euo pipefail
+cd "$(dirname "$0")"
+owner=rust-lang
+repo=rust-analyzer
+nixpkgs=../../../../..
+
+# Update lsp
+
+ver=$(
+    curl -s "https://api.github.com/repos/$owner/$repo/releases" |
+    jq 'map(select(.prerelease | not)) | .[0].tag_name' --raw-output
+)
+old_ver=$(sed -nE 's/.*\bversion = "(.*)".*/\1/p' ./default.nix)
+if grep -q 'cargoSha256 = ""' ./default.nix; then
+    old_ver='broken'
+fi
+if [[ "$ver" == "$old_ver" ]]; then
+    echo "Up to date: $ver"
+    exit
+fi
+echo "$old_ver -> $ver"
+
+sha256=$(nix-prefetch -f "$nixpkgs" rust-analyzer-unwrapped.src --rev "$ver")
+# Clear cargoSha256 to avoid inconsistency.
+sed -e "s#version = \".*\"#version = \"$ver\"#" \
+    -e "/fetchFromGitHub/,/}/ s#sha256 = \".*\"#sha256 = \"$sha256\"#" \
+    -e "s#cargoSha256 = \".*\"#cargoSha256 = \"sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=\"#" \
+    --in-place ./default.nix
+
+echo "Prebuilding for cargoSha256"
+cargo_sha256=$(nix-prefetch "{ sha256 }: (import $nixpkgs {}).rust-analyzer-unwrapped.cargoDeps.overrideAttrs (_: { outputHash = sha256; })")
+sed "s#cargoSha256 = \".*\"#cargoSha256 = \"$cargo_sha256\"#" \
+    --in-place ./default.nix