realize optionsJSON derivation for nixos-search

1 files changed, 24 insertions, 4 deletions

diff --git a/cmd/nixos-search/options.go b/cmd/nixos-search/options.go
index a03c585..e5de32d 100644
--- a/cmd/nixos-search/options.go
+++ b/cmd/nixos-search/options.go
@@ -2,7 +2,9 @@ package main
 
 import (
         _ "embed"
+        "encoding/json"
         "fmt"
+        "os"
         "strings"
 
         nix "git.sixfoisneuf.fr/nix-tools/nix"
@@ -34,7 +36,7 @@ let
   
   optionsDoc = pkgs.pkgs.buildPackages.nixosOptionsDoc { inherit options; };
 in
-optionsDoc
+optionsDoc.optionsJSON.drvPath
 `
 
 func LoadOptions(nixpkgs string) ([]Option, error) {
@@ -43,14 +45,32 @@ func LoadOptions(nixpkgs string) ([]Option, error) {
                 return nil, fmt.Errorf("loading '%s': %v", nixpkgs, err)
         }
 
-        res, err := pkgs.EvalSet(optionsExpr)
+        drv, err := pkgs.EvalString(optionsExpr)
         if err != nil {
                 return nil, fmt.Errorf("running Nix query: %v", err)
         }
 
+        path, err := nix.BuildDerivation(drv)
+        if err != nil {
+                return nil, fmt.Errorf("building options.json: %v", err)
+        }
+
+        path = strings.TrimSpace(path)
+        path = path + "/share/doc/nixos/options.json"
+
+        var res map[string]map[string]interface{}
+        data, err := os.ReadFile(path)
+        if err != nil {
+                return nil, fmt.Errorf("reading %s: %v", path, err)
+        }
+
+        err = json.Unmarshal(data, &res)
+        if err != nil {
+                return nil, fmt.Errorf("parsing JSON in %s: %v", path, err)
+        }
+
         var options []Option
-        for option, paramsTmp := range res["optionsNix"].(map[string]interface{}) {
-                params := paramsTmp.(map[string]interface{})
+        for option, params := range res {
                 o := Option{
                         Name: option,
                 }