linux: more update-script cleanups/fixes

- special case linux-testing fetching
- use hash instead of sha256 everywhere
- respect COMMIT envvar

This causes rebuilds, so should go in with the next bump probably.

pkgs/os-specific/linux/kernel/kernels-org.json

@@ -1,38 +1,38 @@
 {
     "testing": {
-        "version": "6.6-rc1",
-        "hash": "02zh3dnikyhhlas9xccia963d4yqmzq0m4b8s10x8mjng3na45hd"
+        "version": "6.6-rc2",
+        "hash": "sha256:1hbva5vsfi48h82ll4kmhzm5hxp7340bj2smwgvjikam26icaj54"
     },
     "6.5": {
         "version": "6.5.4",
-        "hash": "0s8nzd8yaq06bq8byk7aakbk95gh0rhlif26h1biw94v48anrxxx"
+        "hash": "sha256:0s8nzd8yaq06bq8byk7aakbk95gh0rhlif26h1biw94v48anrxxx"
     },
     "6.4": {
         "version": "6.4.16",
-        "hash": "0zgj1z97jyx7wf12zrnlcp0mj4cl43ais9qsy6dh1jwylf2fq9ln"
+        "hash": "sha256:0zgj1z97jyx7wf12zrnlcp0mj4cl43ais9qsy6dh1jwylf2fq9ln"
     },
     "6.1": {
         "version": "6.1.54",
-        "hash": "09sfrq2l8f777mx2n9mhb6bgz1064bl04921byqnmk87si31w653"
+        "hash": "sha256:09sfrq2l8f777mx2n9mhb6bgz1064bl04921byqnmk87si31w653"
     },
     "5.15": {
         "version": "5.15.132",
-        "hash": "1b0qjsaqjw2rk86shmmrj2aasblkn27acjmc761vnjg7sv2baxs1"
+        "hash": "sha256:1b0qjsaqjw2rk86shmmrj2aasblkn27acjmc761vnjg7sv2baxs1"
     },
     "5.10": {
         "version": "5.10.195",
-        "hash": "0n4vg2i9sq89wnz85arlyvwysh9s83cgzs5bk2wh98bivi5fwfs1"
+        "hash": "sha256:0n4vg2i9sq89wnz85arlyvwysh9s83cgzs5bk2wh98bivi5fwfs1"
     },
     "5.4": {
         "version": "5.4.256",
-        "hash": "0fim5q9xakwnjfg48bpsic9r2r8dvrjlalqqkm9vh1rml9mhi967"
+        "hash": "sha256:0fim5q9xakwnjfg48bpsic9r2r8dvrjlalqqkm9vh1rml9mhi967"
     },
     "4.19": {
         "version": "4.19.294",
-        "hash": "03x0xsb8a369zdr81hg6xdl5n5v48k6iwnhj6r29725777lvvbfc"
+        "hash": "sha256:03x0xsb8a369zdr81hg6xdl5n5v48k6iwnhj6r29725777lvvbfc"
     },
     "4.14": {
         "version": "4.14.325",
-        "hash": "117p1mdha57f6d3kdwac9jrbmib7g77q4xhir8ghl6fmrs1f2sav"
+        "hash": "sha256:117p1mdha57f6d3kdwac9jrbmib7g77q4xhir8ghl6fmrs1f2sav"
     }
 }

pkgs/os-specific/linux/kernel/mainline.nix

@@ -1,18 +1,27 @@
-{ branch, lib, fetchurl, buildLinux, ... } @ args:
+{ branch, lib, fetchurl, fetchzip, buildLinux, ... } @ args:
 
 let
   allKernels = builtins.fromJSON (builtins.readFile ./kernels-org.json);
   thisKernel = allKernels.${branch};
+  inherit (thisKernel) version;
+
+  src =
+    # testing kernels are a special case because they don't have tarballs on the CDN
+    if branch == "testing"
+      then fetchzip {
+        url = "https://git.kernel.org/torvalds/t/linux-${version}.tar.gz";
+        inherit (thisKernel) hash;
+      }
+      else fetchurl {
+        url = "mirror://kernel/linux/kernel/v${lib.versions.major version}.x/linux-${version}.tar.xz";
+        inherit (thisKernel) hash;
+      };
+
+  args' = (builtins.removeAttrs args ["branch"]) // {
+    inherit src version;
 
-  args' = (builtins.removeAttrs args ["branch"]) // rec {
-    inherit (thisKernel) version;
     modDirVersion = lib.versions.pad 3 version;
     extraMeta.branch = branch;
-
-    src = fetchurl {
-      url = "mirror://kernel/linux/kernel/v${lib.versions.major version}.x/linux-${version}.tar.xz";
-      sha256 = thisKernel.hash;
-    };
   } // (args.argsOverride or {});
 in
 buildLinux args'

pkgs/os-specific/linux/kernel/update-mainline.py

@@ -9,6 +9,7 @@ import re
 import subprocess
 import urllib.request
 import sys
+import os
 
 
 HERE = pathlib.Path(__file__).parent
@@ -24,6 +25,7 @@ class KernelNature(Enum):
 class KernelRelease:
     nature: KernelNature
     version: str
+    branch: str
     date: str
     link: str
     eol: bool = False
@@ -43,7 +45,14 @@ def parse_release(release: Tag) -> KernelRelease | None:
     assert link is not None, f'link for kernel {version} is non-existent'
     eol = bool(release.find(class_='eolkernel'))
 
-    return KernelRelease(nature=nature, version=version, date=date, link=link, eol=eol)
+    return KernelRelease(
+        nature=nature,
+        branch=get_branch(version),
+        version=version,
+        date=date,
+        link=link,
+        eol=eol,
+    )
 
 def get_branch(version: str):
     # This is a testing kernel.
@@ -53,9 +62,18 @@ def get_branch(version: str):
         major, minor, *_ = version.split(".")
         return f"{major}.{minor}"
 
+def get_hash(kernel: KernelRelease):
+    if kernel.branch == "testing":
+        args = ["--unpack"]
+    else:
+        args = []
 
-def get_hash(url: str):
-    return subprocess.check_output(["nix-prefetch-url", url]).decode().strip()
+    hash = (
+        subprocess.check_output(["nix-prefetch-url", kernel.link] + args)
+        .decode()
+        .strip()
+    )
+    return f"sha256:{hash}"
 
 
 def commit(message):
@@ -91,13 +109,17 @@ def main():
 
         print(message)
 
-        all_kernels[branch] = {"version": kernel.version, "hash": get_hash(kernel.link)}
+        all_kernels[branch] = {
+            "version": kernel.version,
+            "hash": get_hash(kernel),
+        }
 
         with VERSIONS_FILE.open("w") as fd:
             json.dump(all_kernels, fd, indent=4)
             fd.write("\n")  # makes editorconfig happy
 
-        commit(message)
+        if os.environ.get("COMMIT") == "1":
+            commit(message)
 
 
 if __name__ == "__main__":