releng: support multiple systems

I guess this is kind of important to being able to "release it".

Change-Id: Id6f295d0b4944fa1203783a400a246727dbd94b6

releng/cli.py

@@ -2,16 +2,16 @@ from . import create_release
 from . import docker
 from .environment import RelengEnvironment
 from . import environment
-import functools
 import argparse
 import sys
 
 
 def do_build(args):
     if args.target == 'all':
-        create_release.build_artifacts(no_check_git=args.no_check_git)
+        create_release.build_artifacts(args.profile, no_check_git=args.no_check_git)
     elif args.target == 'manual':
-        eval_result = create_release.eval_jobs()
+        # n.b. args.profile does nothing here, you will just get the x86_64-linux manual no matter what.
+        eval_result = create_release.eval_jobs(args.profile)
         create_release.build_manual(eval_result)
     else:
         raise ValueError('invalid target, unreachable')
@@ -80,6 +80,10 @@ def main():
     build.add_argument('--target',
                        choices=['manual', 'all'],
                        help='Whether to build everything or just the manual')
+    build.add_argument('--profile',
+                       default='all',
+                       choices=('all', 'x86_64-linux-only'),
+                       help='Which systems to build targets for.')
     build.set_defaults(cmd=do_build)
 
     upload = sps.add_parser(

releng/create_release.xsh

@@ -27,9 +27,6 @@ RELENG_MSG = "Release created with releng/create_release.xsh"
 BUILD_CORES = 16
 MAX_JOBS = 2
 
-# TODO
-RELEASE_SYSTEMS = ["x86_64-linux"]
-
 
 def setup_creds(env: RelengEnvironment):
     key = keys.get_ephemeral_key(env)
@@ -82,11 +79,9 @@ def realise(paths: list[str]):
     nix-store @(args) @(paths)
 
 
-def eval_jobs():
-    nej_output = $(nix-eval-jobs --workers 4 --gc-roots-dir @(GCROOTS_DIR) --force-recurse --flake '.#release-jobs')
-    return [x for x in (json.loads(s) for s in nej_output.strip().split('\n'))
-        if x['system'] in RELEASE_SYSTEMS
-    ]
+def eval_jobs(build_profile):
+    nej_output = $(nix-eval-jobs --workers 4 --gc-roots-dir @(GCROOTS_DIR) --force-recurse --flake f'.#release-jobs.{build_profile}')
+    return [json.loads(s) for s in nej_output.strip().split('\n')]
 
 
 def upload_drv_paths_and_outputs(env: RelengEnvironment, paths: list[str]):
@@ -295,14 +290,14 @@ def upload_manual(env: RelengEnvironment):
         aws s3 sync @(MANUAL)/ @(env.docs_bucket)/manual/lix/stable/
 
 
-def build_artifacts(no_check_git=False):
+def build_artifacts(build_profile, no_check_git=False):
     rm -rf release/
     if not no_check_git:
         verify_are_on_tag()
         git_preconditions()
 
     print('[+] Evaluating')
-    eval_result = eval_jobs()
+    eval_result = eval_jobs(build_profile)
     drv_paths = [x['drvPath'] for x in eval_result]
 
     print('[+] Building')

releng/docker_assemble.py

@@ -100,14 +100,6 @@ class OCIIndex:
         }
 
 
-def docker_architecture_from_nix_system(system: str) -> DockerArchitecture:
-    MAP = {
-        'x86_64-linux': 'amd64',
-        'aarch64-linux': 'arm64',
-    }
-    return MAP[system]  # type: ignore
-
-
 @dataclasses.dataclass
 class TaggingOperation:
     manifest: OCIIndex

releng/release-jobs.nix

@@ -3,8 +3,27 @@ let
   inherit (pkgs) lib;
   lix = hydraJobs.build.x86_64-linux;
 
+  # This is all so clumsy because we can't use arguments to functions in
+  # flakes, and certainly not with n-e-j.
+  profiles = {
+    # Used for testing
+    x86_64-linux-only = {
       systems = [ "x86_64-linux" ];
       dockerSystems = [ "x86_64-linux" ];
+    };
+    all = {
+      systems = [
+        "x86_64-linux"
+        "aarch64-linux"
+        "aarch64-darwin"
+        "x86_64-darwin"
+      ];
+      dockerSystems = [
+        "x86_64-linux"
+        "aarch64-linux"
+      ];
+    };
+  };
 
   doTarball =
     {
@@ -27,7 +46,8 @@ let
       sha256sum --binary $filename | cut -f1 -d' ' > $out/$basename.sha256
     '';
 
-  targets =
+  targetsFor =
+    { systems, dockerSystems }:
     builtins.map (system: {
       target = hydraJobs.binaryTarball.${system};
       targetName = "*.tar.xz";
@@ -44,14 +64,26 @@ let
     tar -cvzf "$out/lix-${lix.version}-manual.tar.gz" lix-${lix.version}-manual
   '';
 
-  tarballs = pkgs.runCommand "lix-release-tarballs" { } ''
+  tarballsFor =
+    { systems, dockerSystems }:
+    pkgs.runCommand "lix-release-tarballs" { } ''
       mkdir -p $out
-    ${lib.concatMapStringsSep "\n" doTarball targets}
+      ${lib.concatMapStringsSep "\n" doTarball (targetsFor {
+        inherit systems dockerSystems;
+      })}
       cp ${manualTar}/*.tar.gz $out
       cp -r ${lix.doc}/share/doc/nix/manual $out
     '';
 in
-{
+(builtins.mapAttrs (
+  _:
+  { systems, dockerSystems }:
+  {
+    build = lib.filterAttrs (x: _: builtins.elem x systems) hydraJobs.build;
+    tarballs = tarballsFor { inherit systems dockerSystems; };
+  }
+) profiles)
+// {
   inherit (hydraJobs) build;
-  inherit tarballs;
+  inherit tarballsFor;
 }