From 57d6042339d3898c7191bcd7d4160b7cc9ba64d6 Mon Sep 17 00:00:00 2001
From: Dan Liebault <d.liebault@systancia.com>
Date: Mon, 16 Feb 2026 18:11:34 +0100
Subject: [PATCH 01/18] update curl to 8.8 -> 8.18

---
 build.zig.zon     | 10 +++---
 libs/curl.zig     | 77 ++++++++++++++++++++++++++++++-----------------
 src/MultiPart.zig |  2 +-
 3 files changed, 54 insertions(+), 35 deletions(-)

diff --git a/build.zig.zon b/build.zig.zon
index cefb69b..12d2f6b 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -11,12 +11,6 @@
         "LICENSE",
     },
     .dependencies = .{
-        .curl = .{
-            // https://github.com/curl/curl/releases/tag/curl-8_8_0
-            .url = "https://github.com/curl/curl/releases/download/curl-8_8_0/curl-8.8.0.tar.gz",
-            .hash = "N-V-__8AAHipPQF9UuLPiaV1CtJzZIxvTN61tMGdFx8LGjIV",
-            .lazy = true,
-        },
         // https://github.com/madler/zlib/releases/tag/v1.3.1
         .zlib = .{
             .url = "https://github.com/madler/zlib/releases/download/v1.3.1/zlib-1.3.1.tar.gz",
@@ -28,5 +22,9 @@
             .hash = "N-V-__8AAFrtpQI1j9eOv7aN3lt3eH1TJfH4npAdRIrg2gGH",
             .lazy = true,
         },
+        .curl = .{
+            .url = "https://github.com/curl/curl/releases/download/curl-8_18_0/curl-8.18.0.tar.gz",
+            .hash = "N-V-__8AALp9QAGn6CCHZ6fK_FfMyGtG824LSHYHHasM3w-y",
+        },
     },
 }
diff --git a/libs/curl.zig b/libs/curl.zig
index 01b0d4a..c407bd3 100644
--- a/libs/curl.zig
+++ b/libs/curl.zig
@@ -204,12 +204,15 @@ pub fn create(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.bui
 }
 
 const srcs = &.{
+    "lib/cw-pause.c",
+    "lib/curlx/winapi.c",
+    "lib/curlx/strerr.c",
     "lib/cookie.c",
     "lib/http_chunks.c",
     "lib/escape.c",
-    "lib/version_win32.c",
+    "lib/curlx/version_win32.c",
     "lib/url.c",
-    "lib/base64.c",
+    "lib/curlx/base64.c",
     "lib/mqtt.c",
     "lib/setopt.c",
     "lib/telnet.c",
@@ -229,57 +232,73 @@ const srcs = &.{
     "lib/bufref.c",
     "lib/slist.c",
     "lib/curl_trc.c",
+    "lib/ratelimit.c",
+    "lib/strequal.c",
     "lib/vtls/rustls.c",
     "lib/vtls/mbedtls.c",
     "lib/vtls/wolfssl.c",
     "lib/vtls/schannel.c",
     "lib/vtls/gtls.c",
-    "lib/vtls/sectransp.c",
+    // "lib/vtls/sectransp.c",
     "lib/vtls/vtls.c",
-    "lib/vtls/mbedtls_threadlock.c",
+    // "lib/vtls/mbedtls_threadlock.c",
     "lib/vtls/schannel_verify.c",
     "lib/vtls/hostcheck.c",
-    "lib/vtls/bearssl.c",
+    // "lib/vtls/bearssl.c",
     "lib/vtls/openssl.c",
     "lib/vtls/x509asn1.c",
     "lib/vtls/keylog.c",
+    "lib/vtls/vtls_scache.c",
+    "lib/cshutdn.c",
+    "lib/multi_ev.c",
+    "lib/curlx/wait.c",
+    "lib/uint-spbset.c",
+    "lib/uint-bset.c",
     "lib/file.c",
     "lib/socks_gssapi.c",
     "lib/select.c",
     "lib/socketpair.c",
     "lib/curl_memrchr.c",
     "lib/cfilters.c",
-    "lib/strtok.c",
+    "lib/cf-ip-happy.c",
+    "lib/multi_ntfy.c",
+    "lib/uint-table.c",
+    "lib/curlx/strparse.c",
+    // "lib/strtok.c",
     "lib/version.c",
-    "lib/fopen.c",
+    "lib/curlx/fopen.c",
+    "lib/curl_fopen.c",
     "lib/http_aws_sigv4.c",
     "lib/mprintf.c",
-    "lib/curl_path.c",
+    // "lib/curl_path.c",
     "lib/parsedate.c",
-    "lib/rename.c",
+    // "lib/rename.c",
     "lib/ftplistparser.c",
     "lib/content_encoding.c",
     "lib/mime.c",
     "lib/rand.c",
-    "lib/curl_des.c",
+    // "lib/curl_des.c",
     "lib/curl_ntlm_core.c",
     "lib/pop3.c",
     "lib/curl_sspi.c",
     "lib/smb.c",
     "lib/conncache.c",
-    "lib/inet_pton.c",
+    "lib/curlx/inet_pton.c",
     "lib/if2ip.c",
     "lib/openldap.c",
     "lib/http_digest.c",
     "lib/cf-h1-proxy.c",
-    "lib/asyn-thread.c",
+    // "lib/asyn-thread.c",
+    "lib/asyn-ares.c",
+    "lib/asyn-thrdd.c",
     "lib/strerror.c",
     "lib/ftp.c",
     "lib/strdup.c",
+    "lib/curlx/strcopy.c",
     "lib/memdebug.c",
-    "lib/speedcheck.c",
+    // "lib/speedcheck.c",
     "lib/vquic/curl_ngtcp2.c",
-    "lib/vquic/curl_msh3.c",
+    // "lib/vquic/curl_msh3.c",
     "lib/vquic/vquic.c",
     "lib/vquic/curl_quiche.c",
     "lib/getinfo.c",
@@ -303,16 +322,16 @@ const srcs = &.{
     "lib/hostip4.c",
     "lib/curl_rtmp.c",
     "lib/amigaos.c",
-    "lib/share.c",
-    "lib/warnless.c",
-    "lib/hostsyn.c",
+    "lib/curl_share.c",
+    "lib/curlx/warnless.c",
+    // "lib/hostsyn.c",
     "lib/md5.c",
-    "lib/strtoofft.c",
+    // "lib/strtoofft.c",
     "lib/altsvc.c",
     "lib/formdata.c",
-    "lib/dynbuf.c",
+    "lib/curlx/dynbuf.c",
     "lib/curl_addrinfo.c",
-    "lib/hostasyn.c",
+    // "lib/hostasyn.c",
     "lib/doh.c",
     "lib/request.c",
     "lib/cw-out.c",
@@ -320,24 +339,26 @@ const srcs = &.{
     "lib/vtls/cipher_suite.c",
     "lib/easygetopt.c",
     "lib/ldap.c",
-    "lib/nonblock.c",
+    "lib/curlx/nonblock.c",
     "lib/idn.c",
     "lib/pingpong.c",
     "lib/imap.c",
     "lib/vssh/libssh.c",
-    "lib/vssh/wolfssh.c",
+    // "lib/vssh/wolfssh.c",
     "lib/vssh/libssh2.c",
+    "lib/vssh/vssh.c",
     "lib/splay.c",
-    "lib/krb5.c",
+    // "lib/krb5.c",
     "lib/progress.c",
     "lib/cf-haproxy.c",
     "lib/easyoptions.c",
     "lib/curl_range.c",
     "lib/curl_endian.c",
     "lib/http_proxy.c",
-    "lib/inet_ntop.c",
-    "lib/timeval.c",
+    "lib/curlx/inet_ntop.c",
+    "lib/curlx/timeval.c",
     "lib/asyn-ares.c",
+    "lib/asyn-base.c",
     "lib/rtsp.c",
     "lib/sha256.c",
     "lib/curl_threads.c",
@@ -355,19 +376,19 @@ const srcs = &.{
     "lib/psl.c",
     "lib/ws.c",
     "lib/hostip6.c",
-    "lib/curl_multibyte.c",
+    "lib/curlx/multibyte.c",
     "lib/netrc.c",
     "lib/llist.c",
     "lib/urlapi.c",
     "lib/strcase.c",
     "lib/sendf.c",
-    "lib/timediff.c",
+    "lib/curlx/timediff.c",
     "lib/http.c",
     "lib/cf-h2-proxy.c",
     "lib/socks.c",
     "lib/http_negotiate.c",
     "lib/transfer.c",
-    "lib/c-hyper.c",
+    // "lib/c-hyper.c",
     "lib/hmac.c",
     "lib/fileinfo.c",
 };
diff --git a/src/MultiPart.zig b/src/MultiPart.zig
index 92b66be..9b7f06b 100644
--- a/src/MultiPart.zig
+++ b/src/MultiPart.zig
@@ -77,7 +77,7 @@ pub const NonCopyingData = struct {
             return to_read;
         }
 
-        pub fn seek(user_data: ?*anyopaque, offset: c_long, origin: c_int) callconv(.c) c_int {
+        pub fn seek(user_data: ?*anyopaque, offset: c_longlong, origin: c_int) callconv(.c) c_int {
             var source: *DataWithOffset = @ptrCast(@alignCast(user_data orelse return c.CURL_READFUNC_ABORT));
             const new_pos = switch (origin) {
                 c.SEEK_SET => offset,

From 4841794716c1cd9701abec4124f0adf9566bfcec Mon Sep 17 00:00:00 2001
From: Dan Liebault <d.liebault@systancia.com>
Date: Mon, 16 Feb 2026 18:12:50 +0100
Subject: [PATCH 02/18] rm comments

---
 libs/curl.zig | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/libs/curl.zig b/libs/curl.zig
index c407bd3..1d69651 100644
--- a/libs/curl.zig
+++ b/libs/curl.zig
@@ -239,12 +239,9 @@ const srcs = &.{
     "lib/vtls/wolfssl.c",
     "lib/vtls/schannel.c",
     "lib/vtls/gtls.c",
-    // "lib/vtls/sectransp.c",
     "lib/vtls/vtls.c",
-    // "lib/vtls/mbedtls_threadlock.c",
     "lib/vtls/schannel_verify.c",
     "lib/vtls/hostcheck.c",
-    // "lib/vtls/bearssl.c",
     "lib/vtls/openssl.c",
     "lib/vtls/x509asn1.c",
     "lib/vtls/keylog.c",
@@ -264,20 +261,16 @@ const srcs = &.{
     "lib/multi_ntfy.c",
     "lib/uint-table.c",
     "lib/curlx/strparse.c",
-    // "lib/strtok.c",
     "lib/version.c",
     "lib/curlx/fopen.c",
     "lib/curl_fopen.c",
     "lib/http_aws_sigv4.c",
     "lib/mprintf.c",
-    // "lib/curl_path.c",
     "lib/parsedate.c",
-    // "lib/rename.c",
     "lib/ftplistparser.c",
     "lib/content_encoding.c",
     "lib/mime.c",
     "lib/rand.c",
-    // "lib/curl_des.c",
     "lib/curl_ntlm_core.c",
     "lib/pop3.c",
     "lib/curl_sspi.c",
@@ -288,7 +281,6 @@ const srcs = &.{
     "lib/openldap.c",
     "lib/http_digest.c",
     "lib/cf-h1-proxy.c",
-    // "lib/asyn-thread.c",
     "lib/asyn-ares.c",
     "lib/asyn-thrdd.c",
     "lib/strerror.c",
@@ -296,9 +288,7 @@ const srcs = &.{
     "lib/strdup.c",
     "lib/curlx/strcopy.c",
     "lib/memdebug.c",
-    // "lib/speedcheck.c",
     "lib/vquic/curl_ngtcp2.c",
-    // "lib/vquic/curl_msh3.c",
     "lib/vquic/vquic.c",
     "lib/vquic/curl_quiche.c",
     "lib/getinfo.c",
@@ -324,14 +314,11 @@ const srcs = &.{
     "lib/amigaos.c",
     "lib/curl_share.c",
     "lib/curlx/warnless.c",
-    // "lib/hostsyn.c",
     "lib/md5.c",
-    // "lib/strtoofft.c",
     "lib/altsvc.c",
     "lib/formdata.c",
     "lib/curlx/dynbuf.c",
     "lib/curl_addrinfo.c",
-    // "lib/hostasyn.c",
     "lib/doh.c",
     "lib/request.c",
     "lib/cw-out.c",
@@ -344,11 +331,9 @@ const srcs = &.{
     "lib/pingpong.c",
     "lib/imap.c",
     "lib/vssh/libssh.c",
-    // "lib/vssh/wolfssh.c",
     "lib/vssh/libssh2.c",
     "lib/vssh/vssh.c",
     "lib/splay.c",
-    // "lib/krb5.c",
     "lib/progress.c",
     "lib/cf-haproxy.c",
     "lib/easyoptions.c",
@@ -388,7 +373,6 @@ const srcs = &.{
     "lib/socks.c",
     "lib/http_negotiate.c",
     "lib/transfer.c",
-    // "lib/c-hyper.c",
     "lib/hmac.c",
     "lib/fileinfo.c",
 };

From 4e98a879e16685015553d6beb7ff2006710bbebf Mon Sep 17 00:00:00 2001
From: Dan Liebault <d.liebault@systancia.com>
Date: Wed, 18 Feb 2026 10:10:31 +0100
Subject: [PATCH 03/18] define CURL_OS as expected by makefile

---
 libs/curl.zig | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/libs/curl.zig b/libs/curl.zig
index 1d69651..9f9df8f 100644
--- a/libs/curl.zig
+++ b/libs/curl.zig
@@ -200,6 +200,37 @@ pub fn create(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.bui
     lib.root_module.addCMacro("USE_THREADS_POSIX", "1");
     lib.root_module.addCMacro("USE_UNIX_SOCKETS", "1");
     lib.root_module.addCMacro("_FILE_OFFSET_BITS", "64");
+
+    // define CURL_OS based on target platform
+    // current insupported platform : Itanium, RiscOS, OS/400 
+    switch(target.result.os.tag) {
+        .windows => {
+            switch(target.result.cpu.arch) {
+                .x86 => lib.root_module.addCMacro("CURL_OS", "i386-pc-win32"),
+                .x86_64 => lib.root_module.addCMacro("CURL_OS", "x86_64-pc-win32"),
+                .thumb => lib.root_module.addCMacro("CURL_OS", "thumbv7a-pc-win32"),
+                .aarch64 => lib.root_module.addCMacro("CURL_OS", "aarch64-pc-win32"),
+                else => lib.root_module.addCMacro("CURL_OS", "unknown-pc-win32")
+            }
+        },
+        .linux => {
+            switch(target.result.cpu.arch) {
+                .x86_64 => lib.root_module.addCMacro("CURL_OS", "x86_64-pc-linux-gnu"),
+                .aarch64 => lib.root_module.addCMacro("CURL_OS", "aarch64-pc-linux-gnu"),
+                else => lib.root_module.addCMacro("CURL_OS", "Linux")
+            }
+        },
+        .macos => lib.root_module.addCMacro("CURL_OS", "mac"),
+        .freebsd => lib.root_module.addCMacro("CURL_OS", "freebsd"),
+        else => {
+            const arch = @tagName(target.result.cpu.arch);
+            const os = @tagName(target.result.os.tag);
+
+            const system_name = std.fmt.allocPrint(b.allocator, "{s}-pc-{s}", .{ arch, os }) catch "unknown-pc-unknown";
+            lib.root_module.addCMacro("CURL_OS", system_name);
+        }
+    }
+
     return lib;
 }
 
@@ -342,7 +373,6 @@ const srcs = &.{
     "lib/http_proxy.c",
     "lib/curlx/inet_ntop.c",
     "lib/curlx/timeval.c",
-    "lib/asyn-ares.c",
     "lib/asyn-base.c",
     "lib/rtsp.c",
     "lib/sha256.c",

From 6ddbcc6bf0ea4a75174c3bdda27d57da90eeb8e7 Mon Sep 17 00:00:00 2001
From: Dan Liebault <d.liebault@systancia.com>
Date: Wed, 18 Feb 2026 10:15:18 +0100
Subject: [PATCH 04/18] update readme

---
 README.org | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.org b/README.org
index 17c8fb5..bff0136 100644
--- a/README.org
+++ b/README.org
@@ -15,7 +15,7 @@ Zig bindings for [[https://curl.haxx.se/libcurl/][libcurl]], a free and easy-to-
 The vendored libraries consist of:
 | Library | Version |
 |---------+---------|
-| libcurl | [[https://github.com/curl/curl/tree/curl-8_8_0][8.8.0]]   |
+| libcurl | [[https://github.com/curl/curl/tree/curl-8_18_0][8.18.0]]   |
 | zlib    | [[https://github.com/madler/zlib/tree/v1.3.1][1.3.1]]   |
 | mbedtls | [[https://github.com/Mbed-TLS/mbedtls/tree/v3.6.0][3.6.0]]   |
 

From f038421d50b09606c03c05dabd0a1f1f7c080d04 Mon Sep 17 00:00:00 2001
From: Dan Liebault <d.liebault@systancia.com>
Date: Wed, 18 Feb 2026 14:40:05 +0100
Subject: [PATCH 05/18] format error fixed

---
 libs/curl.zig | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/libs/curl.zig b/libs/curl.zig
index 9f9df8f..cdd848f 100644
--- a/libs/curl.zig
+++ b/libs/curl.zig
@@ -202,22 +202,22 @@ pub fn create(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.bui
     lib.root_module.addCMacro("_FILE_OFFSET_BITS", "64");
 
     // define CURL_OS based on target platform
-    // current insupported platform : Itanium, RiscOS, OS/400 
-    switch(target.result.os.tag) {
+    // current insupported platform : Itanium, RiscOS, OS/400
+    switch (target.result.os.tag) {
         .windows => {
-            switch(target.result.cpu.arch) {
+            switch (target.result.cpu.arch) {
                 .x86 => lib.root_module.addCMacro("CURL_OS", "i386-pc-win32"),
                 .x86_64 => lib.root_module.addCMacro("CURL_OS", "x86_64-pc-win32"),
                 .thumb => lib.root_module.addCMacro("CURL_OS", "thumbv7a-pc-win32"),
                 .aarch64 => lib.root_module.addCMacro("CURL_OS", "aarch64-pc-win32"),
-                else => lib.root_module.addCMacro("CURL_OS", "unknown-pc-win32")
+                else => lib.root_module.addCMacro("CURL_OS", "unknown-pc-win32"),
             }
         },
         .linux => {
-            switch(target.result.cpu.arch) {
+            switch (target.result.cpu.arch) {
                 .x86_64 => lib.root_module.addCMacro("CURL_OS", "x86_64-pc-linux-gnu"),
                 .aarch64 => lib.root_module.addCMacro("CURL_OS", "aarch64-pc-linux-gnu"),
-                else => lib.root_module.addCMacro("CURL_OS", "Linux")
+                else => lib.root_module.addCMacro("CURL_OS", "Linux"),
             }
         },
         .macos => lib.root_module.addCMacro("CURL_OS", "mac"),
@@ -228,7 +228,7 @@ pub fn create(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.bui
 
             const system_name = std.fmt.allocPrint(b.allocator, "{s}-pc-{s}", .{ arch, os }) catch "unknown-pc-unknown";
             lib.root_module.addCMacro("CURL_OS", system_name);
-        }
+        },
     }
 
     return lib;

From d1f68439513a6bce558679e9c8280253ff0e0401 Mon Sep 17 00:00:00 2001
From: Dan Liebault <dan.liebault@viacesi.fr>
Date: Thu, 19 Feb 2026 09:58:08 +0100
Subject: [PATCH 06/18] macro is text litteral and needs to be escaped

---
 libs/curl.zig | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/libs/curl.zig b/libs/curl.zig
index cdd848f..b850c9d 100644
--- a/libs/curl.zig
+++ b/libs/curl.zig
@@ -206,27 +206,27 @@ pub fn create(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.bui
     switch (target.result.os.tag) {
         .windows => {
             switch (target.result.cpu.arch) {
-                .x86 => lib.root_module.addCMacro("CURL_OS", "i386-pc-win32"),
-                .x86_64 => lib.root_module.addCMacro("CURL_OS", "x86_64-pc-win32"),
-                .thumb => lib.root_module.addCMacro("CURL_OS", "thumbv7a-pc-win32"),
-                .aarch64 => lib.root_module.addCMacro("CURL_OS", "aarch64-pc-win32"),
-                else => lib.root_module.addCMacro("CURL_OS", "unknown-pc-win32"),
+                .x86 => lib.root_module.addCMacro("CURL_OS", "\"i386-pc-win32\""),
+                .x86_64 => lib.root_module.addCMacro("CURL_OS", "\"x86_64-pc-win32\""),
+                .thumb => lib.root_module.addCMacro("CURL_OS", "\"thumbv7a-pc-win32\""),
+                .aarch64 => lib.root_module.addCMacro("CURL_OS", "\"aarch64-pc-win32\""),
+                else => lib.root_module.addCMacro("CURL_OS", "\"unknown-pc-win32\""),
             }
         },
         .linux => {
             switch (target.result.cpu.arch) {
-                .x86_64 => lib.root_module.addCMacro("CURL_OS", "x86_64-pc-linux-gnu"),
-                .aarch64 => lib.root_module.addCMacro("CURL_OS", "aarch64-pc-linux-gnu"),
-                else => lib.root_module.addCMacro("CURL_OS", "Linux"),
+                .x86_64 => lib.root_module.addCMacro("CURL_OS", "\"x86_64-pc-linux-gnu\""),
+                .aarch64 => lib.root_module.addCMacro("CURL_OS", "\"aarch64-pc-linux-gnu\""),
+                else => lib.root_module.addCMacro("CURL_OS", "\"Linux\""),
             }
         },
-        .macos => lib.root_module.addCMacro("CURL_OS", "mac"),
-        .freebsd => lib.root_module.addCMacro("CURL_OS", "freebsd"),
+        .macos => lib.root_module.addCMacro("CURL_OS", "\"mac\""),
+        .freebsd => lib.root_module.addCMacro("CURL_OS", "\"freebsd\""),
         else => {
             const arch = @tagName(target.result.cpu.arch);
             const os = @tagName(target.result.os.tag);
 
-            const system_name = std.fmt.allocPrint(b.allocator, "{s}-pc-{s}", .{ arch, os }) catch "unknown-pc-unknown";
+            const system_name = std.fmt.allocPrint(b.allocator, "\"{s}-pc-{s}\"", .{ arch, os }) catch "\"unknown-pc-unknown\"";
             lib.root_module.addCMacro("CURL_OS", system_name);
         },
     }

From 58f3e6f1538c834120b8b8888ed3f35b2d0d9fb1 Mon Sep 17 00:00:00 2001
From: Dan Liebault <dan.liebault@viacesi.fr>
Date: Fri, 20 Feb 2026 15:14:56 +0100
Subject: [PATCH 07/18] update curl deps

---
 build.zig.zon | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/build.zig.zon b/build.zig.zon
index 12d2f6b..d10c06d 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -11,6 +11,11 @@
         "LICENSE",
     },
     .dependencies = .{
+        // https://github.com/curl/curl/releases/tag/curl-8_18_0
+        .curl = .{
+            .url = "https://github.com/curl/curl/releases/download/curl-8_18_0/curl-8.18.0.tar.gz",
+            .hash = "N-V-__8AALp9QAGn6CCHZ6fK_FfMyGtG824LSHYHHasM3w-y",
+        },
         // https://github.com/madler/zlib/releases/tag/v1.3.1
         .zlib = .{
             .url = "https://github.com/madler/zlib/releases/download/v1.3.1/zlib-1.3.1.tar.gz",
@@ -22,9 +27,5 @@
             .hash = "N-V-__8AAFrtpQI1j9eOv7aN3lt3eH1TJfH4npAdRIrg2gGH",
             .lazy = true,
         },
-        .curl = .{
-            .url = "https://github.com/curl/curl/releases/download/curl-8_18_0/curl-8.18.0.tar.gz",
-            .hash = "N-V-__8AALp9QAGn6CCHZ6fK_FfMyGtG824LSHYHHasM3w-y",
-        },
     },
 }

From 90ec2a0180b237ad96d1dd370011022a7b0242b0 Mon Sep 17 00:00:00 2001
From: Dan Liebault <dan.liebault@viacesi.fr>
Date: Fri, 20 Feb 2026 15:23:03 +0100
Subject: [PATCH 08/18] CURL_OS resolve is now a function

---
 libs/curl.zig | 39 +++++++++++++++++++++++----------------
 1 file changed, 23 insertions(+), 16 deletions(-)

diff --git a/libs/curl.zig b/libs/curl.zig
index b850c9d..7d74445 100644
--- a/libs/curl.zig
+++ b/libs/curl.zig
@@ -201,37 +201,44 @@ pub fn create(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.bui
     lib.root_module.addCMacro("USE_UNIX_SOCKETS", "1");
     lib.root_module.addCMacro("_FILE_OFFSET_BITS", "64");
 
-    // define CURL_OS based on target platform
-    // current insupported platform : Itanium, RiscOS, OS/400
+    const system_name = getCurlOS(b.allocator, target);
+    const curl_os = std.fmt.allocPrint(b.allocator, "\"{s}\"", .{ system_name }) catch "\"unknown-pc-unknown\"";
+
+    lib.root_module.addCMacro("CURL_OS", curl_os);
+
+    return lib;
+}
+
+// define CURL_OS based on target platform
+// current insupported platform : Itanium, RiscOS, OS/400
+fn getCurlOS(allocator: std.mem.Allocator, target: std.Build.ResolvedTarget) []const u8 {
     switch (target.result.os.tag) {
         .windows => {
             switch (target.result.cpu.arch) {
-                .x86 => lib.root_module.addCMacro("CURL_OS", "\"i386-pc-win32\""),
-                .x86_64 => lib.root_module.addCMacro("CURL_OS", "\"x86_64-pc-win32\""),
-                .thumb => lib.root_module.addCMacro("CURL_OS", "\"thumbv7a-pc-win32\""),
-                .aarch64 => lib.root_module.addCMacro("CURL_OS", "\"aarch64-pc-win32\""),
-                else => lib.root_module.addCMacro("CURL_OS", "\"unknown-pc-win32\""),
+                .x86 => return "i386-pc-win32",
+                .x86_64 => return "x86_64-pc-win32",
+                .thumb => return "thumbv7a-pc-win32",
+                .aarch64 => return "aarch64-pc-win32",
+                else => return "unknown-pc-win32",
             }
         },
         .linux => {
             switch (target.result.cpu.arch) {
-                .x86_64 => lib.root_module.addCMacro("CURL_OS", "\"x86_64-pc-linux-gnu\""),
-                .aarch64 => lib.root_module.addCMacro("CURL_OS", "\"aarch64-pc-linux-gnu\""),
-                else => lib.root_module.addCMacro("CURL_OS", "\"Linux\""),
+                .x86_64 => return "x86_64-pc-linux-gnu",
+                .aarch64 => return "aarch64-pc-linux-gnu",
+                else => return "Linux",
             }
         },
-        .macos => lib.root_module.addCMacro("CURL_OS", "\"mac\""),
-        .freebsd => lib.root_module.addCMacro("CURL_OS", "\"freebsd\""),
+        .macos => return "mac",
+        .freebsd => return "freebsd",
         else => {
             const arch = @tagName(target.result.cpu.arch);
             const os = @tagName(target.result.os.tag);
 
-            const system_name = std.fmt.allocPrint(b.allocator, "\"{s}-pc-{s}\"", .{ arch, os }) catch "\"unknown-pc-unknown\"";
-            lib.root_module.addCMacro("CURL_OS", system_name);
+            const system_name = std.fmt.allocPrint(allocator, "\"{s}-pc-{s}\"", .{ arch, os }) catch "\"unknown-pc-unknown\"";
+            return system_name;
         },
     }
-
-    return lib;
 }
 
 const srcs = &.{

From 077ec3a3b39e89badf817470037355589a5d90da Mon Sep 17 00:00:00 2001
From: Dan Liebault <dan.liebault@viacesi.fr>
Date: Fri, 20 Feb 2026 15:25:47 +0100
Subject: [PATCH 09/18] zig fmt

---
 libs/curl.zig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/curl.zig b/libs/curl.zig
index 7d74445..75e8ec5 100644
--- a/libs/curl.zig
+++ b/libs/curl.zig
@@ -202,7 +202,7 @@ pub fn create(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.bui
     lib.root_module.addCMacro("_FILE_OFFSET_BITS", "64");
 
     const system_name = getCurlOS(b.allocator, target);
-    const curl_os = std.fmt.allocPrint(b.allocator, "\"{s}\"", .{ system_name }) catch "\"unknown-pc-unknown\"";
+    const curl_os = std.fmt.allocPrint(b.allocator, "\"{s}\"", .{system_name}) catch "\"unknown-pc-unknown\"";
 
     lib.root_module.addCMacro("CURL_OS", curl_os);
 

From b14947c27de782f8f33dd5ae6a3487a798299996 Mon Sep 17 00:00:00 2001
From: Dan Liebault <dan.liebault@viacesi.fr>
Date: Fri, 20 Feb 2026 15:26:47 +0100
Subject: [PATCH 10/18] enable windows ci

---
 .github/workflows/CI.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index d782cab..73641ad 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
       - uses: actions/checkout@v4
       - uses: mlugg/setup-zig@v2

From aaf0a453cbdcd88d92a52fd4e7b8472bea27246e Mon Sep 17 00:00:00 2001
From: Dan Liebault <dan.liebault@viacesi.fr>
Date: Fri, 20 Feb 2026 15:30:54 +0100
Subject: [PATCH 11/18] disable windows ci

---
 .github/workflows/CI.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 73641ad..d782cab 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, macos-latest]
     steps:
       - uses: actions/checkout@v4
       - uses: mlugg/setup-zig@v2

From 3e4f91bced95ffa3e78d9157b8f84e0942c86110 Mon Sep 17 00:00:00 2001
From: Dan Liebault <dan.liebault@viacesi.fr>
Date: Sat, 21 Feb 2026 12:27:42 +0100
Subject: [PATCH 12/18] set curl deps to lazy

---
 build.zig.zon | 1 +
 1 file changed, 1 insertion(+)

diff --git a/build.zig.zon b/build.zig.zon
index d10c06d..3adae2e 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -15,6 +15,7 @@
         .curl = .{
             .url = "https://github.com/curl/curl/releases/download/curl-8_18_0/curl-8.18.0.tar.gz",
             .hash = "N-V-__8AALp9QAGn6CCHZ6fK_FfMyGtG824LSHYHHasM3w-y",
+            .lazy = true,
         },
         // https://github.com/madler/zlib/releases/tag/v1.3.1
         .zlib = .{

From ff6a8c98d183b7e33c4b26e4c6058e5e3c07d383 Mon Sep 17 00:00:00 2001
From: Dan Liebault <dan.liebault@viacesi.fr>
Date: Sat, 21 Feb 2026 12:30:24 +0100
Subject: [PATCH 13/18] windows ci test

---
 .github/workflows/CI.yml | 15 ++++++++++++++-
 Makefile                 |  6 +++---
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index d782cab..b79384c 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -14,13 +14,26 @@ on:
       - '**.yml'
 
 jobs:
+  fmt:
+    timeout-minutes: 10
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: mlugg/setup-zig@v2
+      - name: Run fmt
+        run: |
+          zig fmt --check .
   test-vendor:
     timeout-minutes: 10
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
       - uses: actions/checkout@v4
       - uses: mlugg/setup-zig@v2
diff --git a/Makefile b/Makefile
index d9c34ff..466ac1d 100644
--- a/Makefile
+++ b/Makefile
@@ -14,10 +14,10 @@ run:
 	zig build run-multi -freference-trace $(ARGS)
 	zig build run-header -freference-trace $(ARGS)
 
-lint:
-	zig fmt --check .
+# lint:
+#	zig fmt --check .
 
-test: lint
+test:
 	zig build test $(ARGS)
 
 docs:

From 3a5c64f658b2bcd8c6481a58021c4df4ded09ee6 Mon Sep 17 00:00:00 2001
From: Dan Liebault <dan.liebault@viacesi.fr>
Date: Sat, 21 Feb 2026 12:37:02 +0100
Subject: [PATCH 14/18] use makefile for linting

---
 .github/workflows/CI.yml | 4 ++--
 Makefile                 | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index b79384c..c485d09 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -24,9 +24,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: mlugg/setup-zig@v2
-      - name: Run fmt
+      - name: Run linter
         run: |
-          zig fmt --check .
+          make lint
   test-vendor:
     timeout-minutes: 10
     runs-on: ${{ matrix.os }}
diff --git a/Makefile b/Makefile
index 466ac1d..723d85c 100644
--- a/Makefile
+++ b/Makefile
@@ -14,8 +14,8 @@ run:
 	zig build run-multi -freference-trace $(ARGS)
 	zig build run-header -freference-trace $(ARGS)
 
-# lint:
-#	zig fmt --check .
+lint:
+	zig fmt --check .
 
 test:
 	zig build test $(ARGS)

From 7328a1fe06f7de437c5ddb595080a43786f38385 Mon Sep 17 00:00:00 2001
From: jiacai2050 <dev@liujiacai.net>
Date: Sun, 22 Feb 2026 15:00:10 +0800
Subject: [PATCH 15/18] Refactor: Integrate linting into CI and add `make fix`
 command

---
 .github/workflows/CI.yml | 17 ++++-------------
 Makefile                 |  5 ++++-
 libs/curl.zig            |  3 +--
 3 files changed, 9 insertions(+), 16 deletions(-)

diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index c485d09..4003515 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -14,19 +14,6 @@ on:
       - '**.yml'
 
 jobs:
-  fmt:
-    timeout-minutes: 10
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest]
-    steps:
-      - uses: actions/checkout@v4
-      - uses: mlugg/setup-zig@v2
-      - name: Run linter
-        run: |
-          make lint
   test-vendor:
     timeout-minutes: 10
     runs-on: ${{ matrix.os }}
@@ -37,6 +24,10 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: mlugg/setup-zig@v2
+      - name: Run lint
+        if: matrix.os == 'ubuntu-latest'
+        run: |
+          make lint
       - name: Run tests
         run: |
           make test run
diff --git a/Makefile b/Makefile
index 723d85c..561de7a 100644
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,9 @@ run:
 	zig build run-multi -freference-trace $(ARGS)
 	zig build run-header -freference-trace $(ARGS)
 
+fix:
+	zig fmt  .
+
 lint:
 	zig fmt --check .
 
@@ -30,4 +33,4 @@ clean:
 serve:
 	cd server && go run main.go
 
-.PHONY: run lint test docs clean serve
+.PHONY: run fix lint test docs clean serve
diff --git a/libs/curl.zig b/libs/curl.zig
index 75e8ec5..d018453 100644
--- a/libs/curl.zig
+++ b/libs/curl.zig
@@ -202,8 +202,7 @@ pub fn create(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.bui
     lib.root_module.addCMacro("_FILE_OFFSET_BITS", "64");
 
     const system_name = getCurlOS(b.allocator, target);
-    const curl_os = std.fmt.allocPrint(b.allocator, "\"{s}\"", .{system_name}) catch "\"unknown-pc-unknown\"";
-
+    const curl_os = std.fmt.allocPrint(b.allocator, "\"{s}\"", .{system_name}) catch unreachable;
     lib.root_module.addCMacro("CURL_OS", curl_os);
 
     return lib;

From 630c71a2b9b583b66391df9a95a5da21e9ca9168 Mon Sep 17 00:00:00 2001
From: Jiacai Liu <dev@liujiacai.net>
Date: Sun, 22 Feb 2026 17:57:08 +0800
Subject: [PATCH 16/18] Update MultiPart.zig

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 src/MultiPart.zig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/MultiPart.zig b/src/MultiPart.zig
index 9b7f06b..495da38 100644
--- a/src/MultiPart.zig
+++ b/src/MultiPart.zig
@@ -78,7 +78,7 @@ pub const NonCopyingData = struct {
         }
 
         pub fn seek(user_data: ?*anyopaque, offset: c_longlong, origin: c_int) callconv(.c) c_int {
-            var source: *DataWithOffset = @ptrCast(@alignCast(user_data orelse return c.CURL_READFUNC_ABORT));
+            var source: *DataWithOffset = @ptrCast(@alignCast(user_data orelse return c.CURL_SEEKFUNC_FAIL));
             const new_pos = switch (origin) {
                 c.SEEK_SET => offset,
                 c.SEEK_CUR => offset + @as(c_long, @intCast(source.offset)),

From 274036df6b2918040b15ef1f4f21e61e9ecdf172 Mon Sep 17 00:00:00 2001
From: Jiacai Liu <dev@liujiacai.net>
Date: Sun, 22 Feb 2026 17:58:04 +0800
Subject: [PATCH 17/18] Update curl.zig

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 libs/curl.zig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/curl.zig b/libs/curl.zig
index d018453..80fbe52 100644
--- a/libs/curl.zig
+++ b/libs/curl.zig
@@ -209,7 +209,7 @@ pub fn create(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.bui
 }
 
 // define CURL_OS based on target platform
-// current insupported platform : Itanium, RiscOS, OS/400
+// current unsupported platform : Itanium, RiscOS, OS/400
 fn getCurlOS(allocator: std.mem.Allocator, target: std.Build.ResolvedTarget) []const u8 {
     switch (target.result.os.tag) {
         .windows => {

From 039f624792b2ef4eb05ec6e120d245589be5b614 Mon Sep 17 00:00:00 2001
From: jiacai2050 <dev@liujiacai.net>
Date: Sun, 22 Feb 2026 18:13:59 +0800
Subject: [PATCH 18/18] refactor(curl): improve OS detection and type safety

- `libs/curl.zig`: Refactor `getCurlOS` to return an optional `[]const u8`.
  The logic for constructing the generic "arch-pc-os" system name for unknown
  platforms is now handled directly in the `create` function, rather than within
  `getCurlOS`. This makes `getCurlOS` responsible solely for identifying
  specific, known operating system names.

- `src/MultiPart.zig`: Update the `offset` parameter in the `NonCopyingData.seek`
  callback to use `c.curl_off_t`. This improves type safety and aligns with
  the `curl` library's defined types for file offsets.
---
 libs/curl.zig     | 14 +++++++-------
 src/MultiPart.zig |  4 ++--
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/libs/curl.zig b/libs/curl.zig
index 80fbe52..8d29b51 100644
--- a/libs/curl.zig
+++ b/libs/curl.zig
@@ -201,7 +201,11 @@ pub fn create(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.bui
     lib.root_module.addCMacro("USE_UNIX_SOCKETS", "1");
     lib.root_module.addCMacro("_FILE_OFFSET_BITS", "64");
 
-    const system_name = getCurlOS(b.allocator, target);
+    const system_name = getCurlOS(target) orelse blk: {
+        const arch = @tagName(target.result.cpu.arch);
+        const os = @tagName(target.result.os.tag);
+        break :blk std.fmt.allocPrint(b.allocator, "{s}-pc-{s}", .{ arch, os }) catch unreachable;
+    };
     const curl_os = std.fmt.allocPrint(b.allocator, "\"{s}\"", .{system_name}) catch unreachable;
     lib.root_module.addCMacro("CURL_OS", curl_os);
 
@@ -210,7 +214,7 @@ pub fn create(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.bui
 
 // define CURL_OS based on target platform
 // current unsupported platform : Itanium, RiscOS, OS/400
-fn getCurlOS(allocator: std.mem.Allocator, target: std.Build.ResolvedTarget) []const u8 {
+fn getCurlOS(target: std.Build.ResolvedTarget) ?[]const u8 {
     switch (target.result.os.tag) {
         .windows => {
             switch (target.result.cpu.arch) {
@@ -231,11 +235,7 @@ fn getCurlOS(allocator: std.mem.Allocator, target: std.Build.ResolvedTarget) []c
         .macos => return "mac",
         .freebsd => return "freebsd",
         else => {
-            const arch = @tagName(target.result.cpu.arch);
-            const os = @tagName(target.result.os.tag);
-
-            const system_name = std.fmt.allocPrint(allocator, "\"{s}-pc-{s}\"", .{ arch, os }) catch "\"unknown-pc-unknown\"";
-            return system_name;
+            return null;
         },
     }
 }
diff --git a/src/MultiPart.zig b/src/MultiPart.zig
index 495da38..64b6d39 100644
--- a/src/MultiPart.zig
+++ b/src/MultiPart.zig
@@ -77,11 +77,11 @@ pub const NonCopyingData = struct {
             return to_read;
         }
 
-        pub fn seek(user_data: ?*anyopaque, offset: c_longlong, origin: c_int) callconv(.c) c_int {
+        pub fn seek(user_data: ?*anyopaque, offset: c.curl_off_t, origin: c_int) callconv(.c) c_int {
             var source: *DataWithOffset = @ptrCast(@alignCast(user_data orelse return c.CURL_SEEKFUNC_FAIL));
             const new_pos = switch (origin) {
                 c.SEEK_SET => offset,
-                c.SEEK_CUR => offset + @as(c_long, @intCast(source.offset)),
+                c.SEEK_CUR => offset + @as(c.curl_off_t, @intCast(source.offset)),
                 else => return c.CURL_SEEKFUNC_FAIL,
             };
             if (new_pos < 0) {