From 35c7bf1ff874b0a75b810cf889692656d97abf76 Mon Sep 17 00:00:00 2001
From: Marcos Magueta <maguetamarcos@gmail.com>
Date: Mon, 20 Apr 2026 21:59:37 -0300
Subject: bootstrap nix with c on dune

---
 bin/dune   |  6 ++++++
 bin/main.c | 27 +++++++++++++++++++++++++++
 flake.nix  |  4 ++++
 3 files changed, 37 insertions(+)
 create mode 100644 bin/main.c

diff --git a/bin/dune b/bin/dune
index b559855..36633c1 100644
--- a/bin/dune
+++ b/bin/dune
@@ -4,3 +4,9 @@
  (modules server)
  (libraries relational_engine unix)
  (modes byte exe))
+
+(rule
+ (targets main_c.exe)
+ (deps main.c)
+ (action
+  (bash "cc main.c -o main_c.exe $(pkg-config --cflags --libs lmdb)")))
diff --git a/bin/main.c b/bin/main.c
new file mode 100644
index 0000000..38abeee
--- /dev/null
+++ b/bin/main.c
@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <lmdb.h>
+
+int main(void) {
+    MDB_env *env;
+    int rc;
+
+    rc = mdb_env_create(&env);
+    if (rc) {
+        fprintf(stderr, "mdb_env_create failed: %s\n", mdb_strerror(rc));
+        return EXIT_FAILURE;
+    }
+
+    rc = mdb_env_open(env, "./testdb", MDB_NOSUBDIR, 0664);
+    if (rc) {
+        fprintf(stderr, "mdb_env_open failed: %s\n", mdb_strerror(rc));
+        mdb_env_close(env);
+        return EXIT_FAILURE;
+    }
+
+    printf("LMDB environment opened successfully.\n");
+    printf("LMDB version: %s\n", mdb_version(NULL, NULL, NULL));
+
+    mdb_env_close(env);
+    return EXIT_SUCCESS;
+}
diff --git a/flake.nix b/flake.nix
index ba5bad6..8b8abaf 100644
--- a/flake.nix
+++ b/flake.nix
@@ -218,6 +218,10 @@
 
             # Development tools
             packages = [
+              # C libraries
+              legacyPackages.lmdb.dev
+              legacyPackages.lmdb
+              legacyPackages.pkg-config
               # Source file formatting
               legacyPackages.nixpkgs-fmt
               legacyPackages.ocamlformat
-- 
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