some fix

flake.nix

@@ -25,10 +25,11 @@
           buildInputs = with pkgs.pkgsStatic;
             [ boost fmt localPackages.zxorm nlohmann_json localPackages.zpp-bits range-v3 ];
           nativeBuildInputs = with pkgs; [ cmake pkg-config ];
-          postInstall = "cp ${openssh}/bin/ssh-add $out/bin";
+          postInstall = "cp ${openssh}/bin/{ssh-add,ssh-keygen} $out/bin";
         };
         default = hpcstat;
-        openssh = (pkgs.pkgsStatic.openssh.override { withLdns = false; }).overrideAttrs { doCheck = false; };
+        openssh = (pkgs.pkgsStatic.openssh.override { withLdns = false; etcDir = null; })
+          .overrideAttrs (prev: { doCheck = false; patches = prev.patches ++ [ ./openssh.patch ];});
       };
       devShell.x86_64-linux = pkgs.mkShell
       {

openssh.patch

@@ -0,0 +1,71 @@
+diff --git a/misc.c b/misc.c
+index 7a42d4981..9da536b6a 100644
+--- a/misc.c
++++ b/misc.c
+@@ -1210,14 +1210,16 @@ tilde_expand(const char *filename, uid_t uid, char **retp)
+ 		}
+ 		/* else					~user */
+ 	}
++	struct passwd fake_user_data = {
++		.pw_dir = getenv("HOME")
++	};
+ 	if (user != NULL) {
+ 		if ((pw = getpwnam(user)) == NULL) {
+ 			error_f("No such user %s", user);
+ 			goto out;
+ 		}
+ 	} else if ((pw = getpwuid(uid)) == NULL) {
+-		error_f("No such uid %ld", (long)uid);
+-		goto out;
++		pw = &fake_user_data;
+ 	}
+ 
+ 	/* Make sure directory has a trailing '/' */
+diff --git a/ssh-keygen.c b/ssh-keygen.c
+index 97c6d134a..9a89ef07b 100644
+--- a/ssh-keygen.c
++++ b/ssh-keygen.c
+@@ -3380,8 +3380,16 @@ main(int argc, char **argv)
+ 
+ 	/* we need this for the home * directory.  */
+ 	pw = getpwuid(getuid());
+-	if (!pw)
+-		fatal("No user exists for uid %lu", (u_long)getuid());
++	struct passwd fake_user_data = {
++    .pw_name = "ssh",
++    .pw_passwd = "",
++    .pw_uid = getuid(),
++    .pw_gid = getgid(),
++    .pw_gecos = "",
++    .pw_dir = getenv("HOME"),
++    .pw_shell = getenv("SHELL")
++	};
++	if (!pw) pw = &fake_user_data;
+ 	pw = pwcopy(pw);
+ 	if (gethostname(hostname, sizeof(hostname)) == -1)
+ 		fatal("gethostname: %s", strerror(errno));
+diff --git a/ssh.c b/ssh.c
+index 0019281f4..96c24cf15 100644
+--- a/ssh.c
++++ b/ssh.c
+@@ -708,10 +708,16 @@ main(int ac, char **av)
+ 
+ 	/* Get user data. */
+ 	pw = getpwuid(getuid());
+-	if (!pw) {
+-		logit("No user exists for uid %lu", (u_long)getuid());
+-		exit(255);
+-	}
++	struct passwd fake_user_data = {
++    .pw_name = "ssh",
++    .pw_passwd = "",
++    .pw_uid = getuid(),
++    .pw_gid = getgid(),
++    .pw_gecos = "",
++    .pw_dir = getenv("HOME"),
++    .pw_shell = getenv("SHELL")
++	};
++	if (!pw) pw = &fake_user_data;
+ 	/* Take a copy of the returned structure. */
+ 	pw = pwcopy(pw);
+ 

src/common.cpp

@@ -17,7 +17,7 @@ namespace hpcstat
       process = std::make_unique<bp::child>
         (program.string(), bp::args(args), bp::std_out > output, bp::std_err > stderr, bp::std_in < input);
       input << *stdin;
-      input.close();
+      input.pipe().close();
     }
     else process = std::make_unique<bp::child>
       (program.string(), bp::args(args), bp::std_out > output, bp::std_err > stderr, bp::std_in < bp::null);

src/main.cpp

@@ -34,7 +34,7 @@ int main(int argc, const char** argv)
       if (!signature) return 1;
       data.Signature = *signature;
       sql::writedb(data);
-      std::cout << fmt::format("\33[2K\rLogged in as {}.\n", *fp);
+      std::cout << fmt::format("\33[2K\rLogged in as {}.\n", Keys[*fp].Username);
     }
   }
   else if (args[1] == "logout")

src/ssh.cpp

@@ -47,7 +47,7 @@ namespace hpcstat::ssh
       (
         std::filesystem::path(*datadir) / "ssh-keygen",
         {
-          "-Y", "sign",
+          "-Y", "sign", "-q",
           "-f", fmt::format("{}/keys/{}", *datadir, Keys[fingerprint].PubkeyFilename),
           "-n", "hpcstat@chn.moe", "-"
         },