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/data/fonts/iosevka/update-bin.sh

@@ -0,0 +1,28 @@
+#! /usr/bin/env nix-shell
+#! nix-shell -i bash -p curl jq
+
+set -euo pipefail
+cd "$(dirname "${BASH_SOURCE[0]}")"
+
+release=$(curl -s https://api.github.com/repos/be5invis/Iosevka/releases/latest)
+
+oldVersion=$(nix-instantiate --eval -E 'with import ../../../.. {}; lib.getVersion iosevka-bin' | tr -d '"')
+version=$(echo "$release" | jq -r .tag_name | tr -d v)
+
+if test "$oldVersion" = "$version"; then
+    echo "New version same as old version, nothing to do." >&2
+    exit 0
+fi
+
+sed -i "s/$oldVersion/$version/" bin.nix
+
+{
+    echo '# This file was autogenerated. DO NOT EDIT!'
+    echo '{'
+    for asset in $(echo "$release" | jq -r '.assets[].name | select(startswith("ttc"))'); do
+        printf '  %s = "%s";\n' \
+            $(echo "$asset" | sed -r "s/^ttc-(.*)-$version.zip$/\1/") \
+            $(nix-prefetch-url "https://github.com/be5invis/Iosevka/releases/download/v$version/$asset")
+    done
+    echo '}'
+} >variants.nix