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/compilers/adoptopenjdk-bin/generate-sources.py

@@ -0,0 +1,67 @@
+#!/usr/bin/env nix-shell
+#!nix-shell --pure -i python3 -p "python3.withPackages (ps: with ps; [ requests ])"
+
+import json
+import re
+import requests
+import sys
+
+releases = ("openjdk8", "openjdk11", "openjdk13", "openjdk14", "openjdk15", "openjdk16")
+oses = ("mac", "linux")
+types = ("jre", "jdk")
+impls = ("hotspot", "openj9")
+
+arch_to_nixos = {
+    "x64": ("x86_64",),
+    "aarch64": ("aarch64",),
+    "arm": ("armv6l", "armv7l"),
+    "ppc64le": ("powerpc64le",),
+}
+
+def get_sha256(url):
+    resp = requests.get(url)
+    if resp.status_code != 200:
+        print("error: could not fetch checksum from url {}: code {}".format(url, resp.code), file=sys.stderr)
+        sys.exit(1)
+    return resp.text.strip().split(" ")[0]
+
+def generate_sources(release, assets):
+    out = {}
+    for asset in assets:
+        if asset["os"] not in oses: continue
+        if asset["binary_type"] not in types: continue
+        if asset["openjdk_impl"] not in impls: continue
+        if asset["heap_size"] != "normal": continue
+        if asset["architecture"] not in arch_to_nixos: continue
+
+        # examples: 11.0.1+13, 8.0.222+10
+        version, build = asset["version_data"]["semver"].split("+")
+
+        type_map = out.setdefault(asset["os"], {})
+        impl_map = type_map.setdefault(asset["binary_type"], {})
+        arch_map = impl_map.setdefault(asset["openjdk_impl"], {
+            "packageType": asset["binary_type"],
+            "vmType": asset["openjdk_impl"],
+        })
+
+        for nixos_arch in arch_to_nixos[asset["architecture"]]:
+            arch_map[nixos_arch] = {
+                "url": asset["binary_link"],
+                "sha256": get_sha256(asset["checksum_link"]),
+                "version": version,
+                "build": build,
+            }
+
+    return out
+
+out = {}
+for release in releases:
+    resp = requests.get("https://api.adoptopenjdk.net/v2/latestAssets/releases/" + release)
+    if resp.status_code != 200:
+        print("error: could not fetch data for release {} (code {})".format(release, resp.code), file=sys.stderr)
+        sys.exit(1)
+    out[release] = generate_sources(release, resp.json())
+
+with open("sources.json", "w") as f:
+    json.dump(out, f, indent=2, sort_keys=True)
+    f.write('\n')