diff --git a/.gitignore b/.gitignore
index 551e26d..0024ce4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 /src/include/config.h
 /deps
 /build
+/gtkscrollbar
diff --git a/meta/deps/limb/configure b/meta/deps/limb/configure
new file mode 100644
index 0000000..1661455
--- /dev/null
+++ b/meta/deps/limb/configure
@@ -0,0 +1 @@
+--no-doc --no-shared
diff --git a/meta/deps/limb/files b/meta/deps/limb/files
new file mode 100644
index 0000000..e69de29
diff --git a/meta/deps/limb/git b/meta/deps/limb/git
new file mode 100644
index 0000000..109fd23
--- /dev/null
+++ b/meta/deps/limb/git
@@ -0,0 +1 @@
+git://lila.oss/limb.git
diff --git a/meta/deps/limb/incdir b/meta/deps/limb/incdir
new file mode 100644
index 0000000..30b990f
--- /dev/null
+++ b/meta/deps/limb/incdir
@@ -0,0 +1 @@
+src/liblimb/include
diff --git a/meta/deps/limb/version b/meta/deps/limb/version
new file mode 100644
index 0000000..8acdd82
--- /dev/null
+++ b/meta/deps/limb/version
@@ -0,0 +1 @@
+0.0.1
diff --git a/project.mk b/project.mk
index 0d8c07b..9f39177 100644
--- a/project.mk
+++ b/project.mk
@@ -1,7 +1 @@
-$(error You need to edit project.mk)
-
-# binaries
-BINS = 
-
-# librairies
-LIBS = 
+BINS = gtkscrollbar
diff --git a/src/doc/gtkscrollbar.1.md b/src/doc/gtkscrollbar.1.md
new file mode 100644
index 0000000..40bc023
--- /dev/null
+++ b/src/doc/gtkscrollbar.1.md
@@ -0,0 +1,44 @@
+% gtkscrollbar
+% gtkscrollbar(1)
+
+# NAME
+
+gtkscrollbar - FIXME: desc here
+
+# SYNOPSIS
+
+*gtkscrollbar* [*-q*] [*-v*] [*--debug* [[@[\`level\`]:]+\`FD\`|\`FILE\`]] [*-O* [@[\`level\`]:]+\`FD\`|\`FILE\`]
+
+# OPTIONS
+
+: *--debug* [[@[\`level\`]:]+\`FD\`|\`FILE\`]
+<inc autoopt_debug.md>
+<inc autoopt_logdbg_level.md>
+
+<inc opt_help.md>
+
+: *-O*, *--log-file* [@[\`level\`]:]+\`FD\`|\`FILE\`
+<inc autoopt_log.md>
+<inc autoopt_logdbg_level.md>
+
+: *-q*, *--quiet*
+<inc autoopt_quiet.md>
+
+: *-v*, *--verbose*
+<inc autoopt_verbose.md>
+
+<inc opt_version.md>
+
+# DESCRIPTION
+
+*gtkscrollbar* is...
+
+<inc bugs.md>
+
+# REPOSITORY
+
+You can find the latest about *gtkscrollbar* from its official site at https://lila.oss/gtkscrollbar
+Latest source code can be browsed online at https://lila.oss/code/gtkscrollbar; or you can clone its
+[git](1) repo from git://lila.oss/gtkscrollbar.git
+
+<inc author.md>
diff --git a/src/gtkscrollbar/+limb b/src/gtkscrollbar/+limb
new file mode 100644
index 0000000..e69de29
diff --git a/src/gtkscrollbar/gtkscrollbar.c b/src/gtkscrollbar/gtkscrollbar.c
new file mode 100644
index 0000000..5f0fa4c
--- /dev/null
+++ b/src/gtkscrollbar/gtkscrollbar.c
@@ -0,0 +1,95 @@
+/* This file is part of gtkscrollbar           https://lila.oss/gtkscrollbar
+ * Copyright (C) 2023 Olivier Brunel                          jjk@jjacky.com */
+/* SPDX-License-Identifier: GPL-2.0-only */
+#include <fcntl.h> /* AT_FDCWD */
+#include <limb/autoopt.h>
+#include <limb/exitcode.h>
+#include <limb/loadopt.h>
+#include <limb/output.h>
+#include <limb/stralloc.h>
+#include "config.h"
+
+const char *PROG = "gtkscrollbar";
+
+struct ctx {
+    stralloc sa;
+    size_t fileoff;
+};
+
+enum {
+    OPTID_VERSION = OPTID_FIRST,
+    OPTID_DEBUG,
+    /* arguments */
+    ARGID_FILE,
+};
+
+static void
+parse_cmdline(int argc, const char *argv[], int dirfd, const char *confdir, struct ctx *ctx)
+{
+    const char usage[] = "[-h] [OPTION..] FILE";
+    const struct option options[] = {
+        OPTION_ARG_OPT(  0 , "debug",                   OPT_SKIP,   OPTID_DEBUG),
+        OPTION_ARG_NONE('h', "help",                    OPT_SKIP,   OPTID_SHORTOPT),
+        OPTION_ARG_REQ( 'O', "log-file",                0,          OPTID_SHORTOPT),
+        OPTION_ARG_NONE('q', "quiet",                   0,          OPTID_SHORTOPT),
+        OPTION_ARG_NONE('v', "verbose",                 0,          OPTID_SHORTOPT),
+        OPTION_ARG_NONE( 0 , "version",                 OPT_SKIP,   OPTID_VERSION),
+        LOADOPT_ARGUMENTS,
+        ARGUMENT_REQ( "file",                           OPT_PATH,   ARGID_FILE),
+        LOADOPT_DONE
+    };
+    struct loadopt lo = LOADOPT_ZERO;
+
+    int c;
+    while ((c = loadopt(&ctx->sa, argc, argv, options, dirfd, confdir, 0, &lo))) switch (c) {
+        case OPTID_DEBUG:
+            if (!autoopt_debug(&options[LO_IDX(&lo)], LO_ARG(&lo)))
+                dieusage(EX_USAGE, usage);
+            break;
+        case 'h':
+            diehelp(0, usage,
+"     --debug [[@[level]:]+FD|FILE]     Enable debug output (to FD|FILE)\n"
+" -O, --output [@[level]:]+FD|FILE      Set output log to FD|FILE\n"
+"\n"
+" -q, --quiet                           Enable quiet mode\n"
+" -v, --verbose                         Enable verbose mode\n"
+"\n"
+" -h, --help                            Show this help screen and exit\n"
+"     --version                         Show version information and exit\n"
+);
+        case 'O':
+            if (!autoopt_log(&options[LO_IDX(&lo)], LO_ARG(&lo)))
+                dieusage(EX_USAGE, usage);
+            break;
+        case 'q':
+            autoopt_quiet(&options[LO_IDX(&lo)], LO_ARG(&lo));
+            break;
+        case 'v':
+            autoopt_verbose(&options[LO_IDX(&lo)], LO_ARG(&lo));
+            break;
+        case OPTID_VERSION:
+            dieversion(GTKSCROLLBAR_VERSION, "2023", GTKSCROLLBAR_CURYEAR, GTKSCROLLBAR_AUTHOR, GTKSCROLLBAR_URL, NULL);
+
+        case ARGID_FILE:
+            ctx->fileoff = LO_OFF(&lo);
+            break;
+
+        case -1:
+            dieusage(EX_USAGE, usage);
+        default:
+            die(EX_SOFTWARE, "unexpected return value ", PMINT(c), " from loadopt");
+    };
+}
+
+int
+main(int argc, const char *argv[])
+{
+    struct ctx ctx = { STRALLOC_ZERO, 0 };
+    const char confdir[] = "/etc/gtkscrollbar/conf";
+    parse_cmdline(argc, argv, AT_FDCWD, confdir, &ctx);
+
+    out("file is ", ESC, ctx.sa.s + ctx.fileoff, ESC);
+
+    stralloc_free(&ctx.sa);
+    return 0;
+}