curl: add pkg-config metadata for libcurl.pc

I did not add the validatePkgConfig setup hook to curl, as I suspect it
may cause trouble when bootstrapping.

doc/languages-frameworks/pkg-config.section.md

@@ -6,7 +6,7 @@ Nixpkgs provides a couple of facilities for working with this tool.
 
 ## Writing packages providing pkg-config modules
 
-Packages should set `meta.pkgConfigProvides` with the list of package config modules they provide.
+Packages should set `meta.pkgConfigModules` with the list of package config modules they provide.
 They should also use `testers.testMetaPkgConfig` to check that the final built package matches that list.
 Additionally, the [`validatePkgConfig` setup hook](https://nixos.org/manual/nixpkgs/stable/#validatepkgconfig), will do extra checks on to-be-installed pkg-config modules.
 

pkgs/tools/networking/curl/default.nix

@@ -33,6 +33,7 @@
 , phpExtensions
 , python3
 , tests
+, testers
 , fetchpatch
 }:
 
@@ -178,6 +179,7 @@ stdenv.mkDerivation (finalAttrs: {
       # Additional checking with support http3 protocol.
       # nginx-http3 = useThisCurl nixosTests.nginx-http3;
       nginx-http3 = nixosTests.nginx-http3;
+      pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
     };
   };
 
@@ -189,5 +191,6 @@ stdenv.mkDerivation (finalAttrs: {
     platforms = platforms.all;
     # Fails to link against static brotli or gss
     broken = stdenv.hostPlatform.isStatic && (brotliSupport || gssSupport);
+    pkgConfigModules = [ "libcurl" ];
   };
 })

pkgs/top-level/pkg-config/pkg-config-data.json

@@ -445,6 +445,11 @@
         "openssl"
       ]
     },
+    "libcurl": {
+      "attrPath": [
+        "curl"
+      ]
+    },
     "libecpg": {
       "attrPath": [
         "postgresql"