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diff --git a/pkin/.cache/clangd/index/pkin_repo_simple.c.EAE9A2D3F20C471B.idx b/pkin/.cache/clangd/index/pkin_repo_simple.c.EAE9A2D3F20C471B.idx
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diff --git a/pkin/README b/pkin/README
index 15f559f..7298779 100644
--- a/pkin/README
+++ b/pkin/README
@@ -13,5 +13,6 @@ goal:
  - lazy metadata
  - 
 
-deps: aria2
-makedeps: meson(or muon), ninja(or samu), a c compiler
+makedeps: meson, ninja, libowfat
+deps: aria2, libowfat
+ `-> or statically link
diff --git a/pkin/pkin/pkin_pkg_fetch.c b/pkin/pkin/pkin_pkg_fetch.c
deleted file mode 100644
index f5c3071..0000000
--- a/pkin/pkin/pkin_pkg_fetch.c
+++ /dev/null
@@ -1,2 +0,0 @@
-
-int pkin_pkg_fetch(char *url, char *dir, stralloc *result);
diff --git a/pkin/pkin/pkin_pkg_fetch_add.c b/pkin/pkin/pkin_pkg_fetch_add.c
index b92f3a3..640c62f 100644
--- a/pkin/pkin/pkin_pkg_fetch_add.c
+++ b/pkin/pkin/pkin_pkg_fetch_add.c
@@ -3,6 +3,8 @@
 void pkin_fetch_add(pkin_fetch_queue *queue, char *url, char *output)
 {
   buffer_puts(&queue->writeb, url);
-  buffer_puts(&queue->writeb, "\n -o ");
+  buffer_puts(&queue->writeb, "\n out=");
   buffer_puts(&queue->writeb, output);
+  buffer_puts(&queue->writeb, "\n user-agent=pkin <https://git.lab0x13.site/kento2/pkin>");
+  buffer_puts(&queue->writeb, "\n");
 }
diff --git a/pkin/pkin/pkin_pkg_fetch_start.c b/pkin/pkin/pkin_pkg_fetch_start.c
index 8272b3d..6e963d0 100644
--- a/pkin/pkin/pkin_pkg_fetch_start.c
+++ b/pkin/pkin/pkin_pkg_fetch_start.c
@@ -1,5 +1,6 @@
 #include <libowfat/errmsg.h>
 #include <sys/wait.h>
+#include <unistd.h>
 #include "../pkin.h"
 #include "../pkin_internal.h"
 
@@ -11,6 +12,7 @@ int pkin_fetch_start(pkin_fetch_queue *queue)
     carpsys("write to pipe");
     return 0;
   }
+  close(queue->pipefd[1]);
 
   fetchcmd = (char *[]){"aria2c", "-i", "-", NULL};
   pid = pkin__spawn(fetchcmd, queue->pipefd[0], 1, 2);
diff --git a/pkin/pkin_internal/pkin__spawn.c b/pkin/pkin_internal/pkin__spawn.c
index 1c44256..856c6e6 100644
--- a/pkin/pkin_internal/pkin__spawn.c
+++ b/pkin/pkin_internal/pkin__spawn.c
@@ -25,17 +25,18 @@ pid_t pkin__spawn(char *args[], int infd, int outfd, int errfd)
   switch (pid) {
     case -1: carpsys("fork: "); return -1;
   case 0:
-    // TODO pipe
-    if (dup2(0, infd)<0
-     || dup2(1, outfd)<0
-     || dup2(2, errfd)<0
+    if (dup2(infd, 0)<0
+     || dup2(outfd, 1)<0
+     || dup2(errfd, 2)<0
     ) {
-      carpsys("dup2");
-      return -1;
+      diesys(111, "dup2");
     }
+    if (infd != 0) close(infd);
+    if (outfd != 1) close(outfd);
+    if (errfd != 2) close(errfd);
     execvp(args[0], args);
     carpsysargs(args);
-    return -1;
+    _exit(111);
   default:
     return pid;
   }