From b7e9a69dd82f8f5ee0dbe0ffc4656a88697e80a6 Mon Sep 17 00:00:00 2001
From: _cry64 <them@dobutterfliescry.net>
Date: Fri, 10 Apr 2026 10:13:26 +1000
Subject: [PATCH] support a nixide C API extension

---
 nixide-sys/libnixide-c/nixide_api_expr.cc     |  0
 nixide-sys/libnixide-c/nixide_api_expr.h      | 12 ++++++++
 nixide-sys/libnixide-c/nixide_api_fetchers.cc |  6 ++--
 nixide-sys/libnixide-c/nixide_api_fetchers.h  |  3 +-
 nixide-sys/libnixide-c/nixide_api_flake.cc    | 14 ++++-----
 nixide-sys/libnixide-c/nixide_api_flake.h     |  2 +-
 nixide-sys/libnixide-c/nixide_api_main.cc     | 30 +++++++++++++++++++
 nixide-sys/libnixide-c/nixide_api_main.h      | 17 +++++++++++
 nixide-sys/libnixide-c/nixide_api_store.cc    |  0
 nixide-sys/libnixide-c/nixide_api_store.h     | 12 ++++++++
 nixide-sys/libnixide-c/nixide_api_util.cc     |  0
 nixide-sys/libnixide-c/nixide_api_util.h      | 12 ++++++++
 12 files changed, 96 insertions(+), 12 deletions(-)
 create mode 100644 nixide-sys/libnixide-c/nixide_api_expr.cc
 create mode 100644 nixide-sys/libnixide-c/nixide_api_expr.h
 create mode 100644 nixide-sys/libnixide-c/nixide_api_main.cc
 create mode 100644 nixide-sys/libnixide-c/nixide_api_main.h
 create mode 100644 nixide-sys/libnixide-c/nixide_api_store.cc
 create mode 100644 nixide-sys/libnixide-c/nixide_api_store.h
 create mode 100644 nixide-sys/libnixide-c/nixide_api_util.cc
 create mode 100644 nixide-sys/libnixide-c/nixide_api_util.h

diff --git a/nixide-sys/libnixide-c/nixide_api_expr.cc b/nixide-sys/libnixide-c/nixide_api_expr.cc
new file mode 100644
index 0000000..e69de29
diff --git a/nixide-sys/libnixide-c/nixide_api_expr.h b/nixide-sys/libnixide-c/nixide_api_expr.h
new file mode 100644
index 0000000..d082784
--- /dev/null
+++ b/nixide-sys/libnixide-c/nixide_api_expr.h
@@ -0,0 +1,12 @@
+#ifndef NIXIDE_API_EXPR_H
+#define NIXIDE_API_EXPR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // NIXIDE_API_EXPR_H
diff --git a/nixide-sys/libnixide-c/nixide_api_fetchers.cc b/nixide-sys/libnixide-c/nixide_api_fetchers.cc
index a8cd4e0..6dbbd03 100644
--- a/nixide-sys/libnixide-c/nixide_api_fetchers.cc
+++ b/nixide-sys/libnixide-c/nixide_api_fetchers.cc
@@ -1,7 +1,7 @@
-#include "nix_api_util_internal.h"
-#include "nix_api_fetchers_internal.hh"
+#include <nix_api_util_internal.h>
+#include <nix_api_fetchers_internal.hh>
 
-#include "nix/fetchers/fetch-settings.hh"
+#include <nix/fetchers/fetch-settings.hh>
 
 extern "C" {
 
diff --git a/nixide-sys/libnixide-c/nixide_api_fetchers.h b/nixide-sys/libnixide-c/nixide_api_fetchers.h
index 572eaff..7e906e4 100644
--- a/nixide-sys/libnixide-c/nixide_api_fetchers.h
+++ b/nixide-sys/libnixide-c/nixide_api_fetchers.h
@@ -1,9 +1,10 @@
 #ifndef NIXIDE_API_FETCHERS_H
 #define NIXIDE_API_FETCHERS_H
 
-#include "nix_api_fetchers.h"
 #include <sys/types.h>
 
+#include <nix_api_fetchers.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/nixide-sys/libnixide-c/nixide_api_flake.cc b/nixide-sys/libnixide-c/nixide_api_flake.cc
index 4b9ec00..45ad079 100644
--- a/nixide-sys/libnixide-c/nixide_api_flake.cc
+++ b/nixide-sys/libnixide-c/nixide_api_flake.cc
@@ -1,12 +1,12 @@
 // #include <string>
 
-// #include "nix_api_flake.h"
-#include "nix_api_flake_internal.hh"
-// #include "nix_api_util.h"
-#include "nix_api_util_internal.h"
-// #include "nix_api_expr_internal.h"
-// #include "nix_api_fetchers_internal.hh"
-// #include "nix_api_fetchers.h"
+// #include <nix_api_flake.h>
+#include <nix_api_flake_internal.hh>
+// #include <nix_api_util.h>
+#include <nix_api_util_internal.h>
+// #include <nix_api_expr_internal.h>
+// #include <nix_api_fetchers_internal.hh>
+// #include <nix_api_fetchers.h>
 
 #include "nix/flake/flake.hh"
 
diff --git a/nixide-sys/libnixide-c/nixide_api_flake.h b/nixide-sys/libnixide-c/nixide_api_flake.h
index 1cd279e..b51518d 100644
--- a/nixide-sys/libnixide-c/nixide_api_flake.h
+++ b/nixide-sys/libnixide-c/nixide_api_flake.h
@@ -1,7 +1,7 @@
 #ifndef NIXIDE_API_FLAKE_H
 #define NIXIDE_API_FLAKE_H
 
-#include "nix_api_flake.h"
+#include <nix_api_flake.h>
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/nixide-sys/libnixide-c/nixide_api_main.cc b/nixide-sys/libnixide-c/nixide_api_main.cc
new file mode 100644
index 0000000..5e6fd92
--- /dev/null
+++ b/nixide-sys/libnixide-c/nixide_api_main.cc
@@ -0,0 +1,30 @@
+#include <dlfcn.h>
+
+#include <nix_api_util.h>
+#include <nix_api_util_internal.h>
+
+#include <nix/main/plugin.hh>
+
+extern "C" {
+
+nix_err nixide_register_plugin(nix_c_context * context, char * plugin)
+{
+    if (context)
+        context->last_err_code = NIX_OK;
+    if (plugin == nullptr) {
+        // TODO: should this be `NIX_ERR_RECOVERABLE` or `NIX_ERR_UNKNOWN`?
+        return nix_set_err_msg(context, NIX_ERR_RECOVERABLE, "Plugin is null");
+    }
+
+    void * handle = dlopen("libnixmainc.so", RTLD_LAZY | RTLD_GLOBAL);
+    if (!handle) {
+        return nix_set_err_msg(context, NIX_ERR_UNKNOWN, dlerror());
+    }
+
+    void * sym_addr = dlsym(handle, "pluginSettings");
+
+    try {
+    }
+    NIXC_CATCH_ERRS
+}
+}
diff --git a/nixide-sys/libnixide-c/nixide_api_main.h b/nixide-sys/libnixide-c/nixide_api_main.h
new file mode 100644
index 0000000..0962cf5
--- /dev/null
+++ b/nixide-sys/libnixide-c/nixide_api_main.h
@@ -0,0 +1,17 @@
+#ifndef NIXIDE_API_MAIN_H
+#define NIXIDE_API_MAIN_H
+
+#include <nix_api_main.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// NOTE: all plugins should be registered BEFORE `nix_init_plugins` is run
+nix_err nixide_register_plugin(nix_c_context * context, char * plugin);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // NIXIDE_API_MAIN_H
diff --git a/nixide-sys/libnixide-c/nixide_api_store.cc b/nixide-sys/libnixide-c/nixide_api_store.cc
new file mode 100644
index 0000000..e69de29
diff --git a/nixide-sys/libnixide-c/nixide_api_store.h b/nixide-sys/libnixide-c/nixide_api_store.h
new file mode 100644
index 0000000..51baab0
--- /dev/null
+++ b/nixide-sys/libnixide-c/nixide_api_store.h
@@ -0,0 +1,12 @@
+#ifndef NIXIDE_API_STORE_H
+#define NIXIDE_API_STORE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // NIXIDE_API_STORE_H
diff --git a/nixide-sys/libnixide-c/nixide_api_util.cc b/nixide-sys/libnixide-c/nixide_api_util.cc
new file mode 100644
index 0000000..e69de29
diff --git a/nixide-sys/libnixide-c/nixide_api_util.h b/nixide-sys/libnixide-c/nixide_api_util.h
new file mode 100644
index 0000000..4d610c3
--- /dev/null
+++ b/nixide-sys/libnixide-c/nixide_api_util.h
@@ -0,0 +1,12 @@
+#ifndef NIXIDE_API_UTIL_H
+#define NIXIDE_API_UTIL_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // NIXIDE_API_UTIL_H