fix(nix-autodeploy): pass the repo map as a file

systemd's Environment= strips the quotes out of inline JSON, so the listener
died on startup parsing it. A store file has no such problem.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

home/common/programs/nix-autodeploy/default.nix

@@ -98,10 +98,9 @@ let
     flakeIgnore = [ "E501" ];
   } (builtins.readFile ./listener.py);
 
-  repoMap = lib.mapAttrs (_: r: {
-    inherit (r) input;
-    inherit (r) apply;
-  }) cfg.repos;
+  repoFile = (pkgs.formats.json { }).generate "nix-autodeploy-repos.json" (
+    lib.mapAttrs (_: r: { inherit (r) input apply; }) cfg.repos
+  );
 in
 {
   options.services.nixAutodeploy = {
@@ -188,7 +187,7 @@ in
           "NIX_AUTODEPLOY_PORT=${toString cfg.port}"
           "NIX_AUTODEPLOY_DEPLOY_BIN=${lib.getExe deploy}"
           "NIX_AUTODEPLOY_ENV_FILE=${cfg.environmentFile}"
-          "NIX_AUTODEPLOY_REPOS=${builtins.toJSON repoMap}"
+          "NIX_AUTODEPLOY_REPOS_FILE=${repoFile}"
         ];
         Restart = "always";
         RestartSec = 2;

home/common/programs/nix-autodeploy/listener.py

@@ -17,8 +17,10 @@ from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
 SECRET = os.environ.get("NIX_AUTODEPLOY_SECRET", "").encode()
 PORT = int(os.environ.get("NIX_AUTODEPLOY_PORT", "7375"))
 DEPLOY = os.environ["NIX_AUTODEPLOY_DEPLOY_BIN"]
-# {"<owner>/<repo>": {"input": "rev", "apply": true}, ...}
-REPOS = json.loads(os.environ["NIX_AUTODEPLOY_REPOS"])
+# {"<owner>/<repo>": {"input": "rev", "apply": true}, ...}. Passed as a file,
+# not a variable: systemd's Environment= strips the quotes out of inline JSON.
+with open(os.environ["NIX_AUTODEPLOY_REPOS_FILE"]) as fh:
+    REPOS = json.load(fh)
 ENV_FILE = os.environ.get("NIX_AUTODEPLOY_ENV_FILE", "")
 MAX_BODY = 1 << 20