From 709ab63d5adb0abb9ce00a9629efa4f0db404eb6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alexandra=20=C3=98stermark?= <alex.cramt@gmail.com>
Date: Wed, 12 Nov 2025 19:55:42 +0100
Subject: [PATCH 1/3] preserve env var yaml tags for recyclarr config

---
 nixarr/recyclarr/default.nix | 46 +++++++++++++++++++++++++++++++++++-
 1 file changed, 45 insertions(+), 1 deletion(-)

diff --git a/nixarr/recyclarr/default.nix b/nixarr/recyclarr/default.nix
index d65da17..d69fc9a 100644
--- a/nixarr/recyclarr/default.nix
+++ b/nixarr/recyclarr/default.nix
@@ -8,7 +8,51 @@ with lib; let
   cfg = config.nixarr.recyclarr;
   globals = config.util-nixarr.globals;
   nixarr = config.nixarr;
-  format = pkgs.formats.yaml {};
+  yamlGenerator = {preserved-tags ? []}: let
+    selectors =
+      pkgs.lib.strings.concatStringsSep "/"
+      (builtins.map (x: ''
+        with((.. | select(kind == "scalar") | select(test("^!${x} .*"))); . = sub("!${x} ", "") | . tag="!${x}")
+      ''))
+      preserved-tags;
+  in {
+    generate = name: value:
+      pkgs.callPackage (
+        {
+          runCommand,
+          yq-go,
+        }:
+          runCommand name
+          {
+            nativeBuildInputs = [yq-go];
+            value = builtins.toJSON value;
+            passAsFile = ["value"];
+            preferLocalBuild = true;
+          }
+          ''
+            yq '${selectors}' "$valuePath" -o yaml > $out
+          ''
+      ) {};
+    type = let
+      baseType = pkgs.lib.types.oneOf [
+        pkgs.lib.types.bool
+        pkgs.lib.types.int
+        pkgs.lib.types.float
+        pkgs.lib.types.float
+        (pkgs.lib.types.attrsOf valueType)
+        (pkgs.lib.types.listOf valueType)
+      ];
+      valueType =
+        (pkgs.lib.types.nullOr baseType)
+        // {
+          description = "Yaml value";
+        };
+    in
+      valueType;
+  };
+  format = yamlGenerator {
+    preserved-tags = ["env_var"];
+  };
 
   # Generate configuration file from Nix attribute set if provided
   generatedConfigFile = format.generate "recyclarr-config.yml" cfg.configuration;

From 9a4dc02b2024700e86e9bbf55f904d7ce2045591 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alexandra=20=C3=98stermark?= <alex.cramt@gmail.com>
Date: Wed, 12 Nov 2025 20:10:17 +0100
Subject: [PATCH 2/3] fix minor mistake

---
 nixarr/recyclarr/default.nix | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/nixarr/recyclarr/default.nix b/nixarr/recyclarr/default.nix
index d69fc9a..248635c 100644
--- a/nixarr/recyclarr/default.nix
+++ b/nixarr/recyclarr/default.nix
@@ -11,10 +11,12 @@ with lib; let
   yamlGenerator = {preserved-tags ? []}: let
     selectors =
       pkgs.lib.strings.concatStringsSep "/"
-      (builtins.map (x: ''
-        with((.. | select(kind == "scalar") | select(test("^!${x} .*"))); . = sub("!${x} ", "") | . tag="!${x}")
-      ''))
-      preserved-tags;
+      (builtins.map (
+          x: ''
+            with((.. | select(kind == "scalar") | select(test("^!${x} .*"))); . = sub("!${x} ", "") | . tag="!${x}")
+          ''
+        )
+        preserved-tags);
   in {
     generate = name: value:
       pkgs.callPackage (

From 74307df8e3e78be893e8dd69bc59b5e94fb8b47e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alexandra=20=C3=98stermark?= <alex.cramt@gmail.com>
Date: Thu, 13 Nov 2025 11:30:23 +0100
Subject: [PATCH 3/3] comments descriping the unreadable yaml generation

---
 nixarr/recyclarr/default.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/nixarr/recyclarr/default.nix b/nixarr/recyclarr/default.nix
index 248635c..b21372c 100644
--- a/nixarr/recyclarr/default.nix
+++ b/nixarr/recyclarr/default.nix
@@ -8,10 +8,14 @@ with lib; let
   cfg = config.nixarr.recyclarr;
   globals = config.util-nixarr.globals;
   nixarr = config.nixarr;
+  # This is a carbon copy of the yaml implementation in nixpkgs https://github.com/NixOS/nixpkgs/blob/fde6c4aec177afa2d0248b1c5983e2a72a231442/pkgs/pkgs-lib/formats.nix#L210-L231
+  # except we've replaced json2yaml for yq-go to allow it to parse custom yaml tags
+  # ideally this would some day be upstreamed, see https://github.com/NixOS/nix/issues/4910 and https://github.com/rasmus-kirk/nixarr/issues/91
   yamlGenerator = {preserved-tags ? []}: let
     selectors =
-      pkgs.lib.strings.concatStringsSep "/"
+      pkgs.lib.strings.concatStringsSep "|"
       (builtins.map (
+          # this is yq for "for all the scalers, if they match this regex, do a regex substitution and set the tag"
           x: ''
             with((.. | select(kind == "scalar") | select(test("^!${x} .*"))); . = sub("!${x} ", "") | . tag="!${x}")
           ''