scripts: fix syntax

packages/libcoap.nix

@@ -5,8 +5,8 @@ stdenv.mkDerivation {
     repo = "libcoap";
     owner = "obgm";
     rev = "25863042ae1e95138776f65c772f9fa6ce60495c";
-    fetchSubmodules = true;
     sha256 = "1nic584jwkndg0w831h0fnxk0zx0apf2lw5md079m3di7zcxs6bw";
+    fetchSubmodules = true;
   };
   buildInputs = [
     automake
@@ -14,13 +14,13 @@ stdenv.mkDerivation {
     which
     libtool
   ];
-  preConfigure = ''./autogen.sh'';
+  preConfigure = "./autogen.sh";
   configureFlags = [
     "--disable-documentation"
     "--disable-shared"
   ];
   meta = with stdenv.lib; {
-    homepage = https://github.com/obgm/libcoap;
+    homepage = "https://github.com/obgm/libcoap";
     description = "A CoAP (RFC 7252) implementation in C";
     platforms = platforms.linux;
     license = licenses.bsd2;

packages/man-pdf.nix

@@ -2,4 +2,5 @@
 writeShellScriptBin "man-pdf" ''
   for program in "$@"; do
     man -t "$program" | ${texlive.combined.scheme-basic}/bin/ps2pdf
+  done
 ''

packages/wttr.nix

@@ -1,4 +1,4 @@
-{ writeShellScriptBin, curl, jq }:
+{ writeShellScriptBin, curl }:
 writeShellScriptBin "wttr" ''
-  ${curl}/bin/curl -s -H "Accept-Language: ''${LANG%_*}" --compressed "wttr.in/''${1-"@$(${curl}/bin/curl -s ipinfo.io | ${jq}/bin/jq -r .ip)"}?0"
+  ${curl}/bin/curl -s -H "Accept-Language: ''${LANG%_*}" --compressed "wttr.in/''${1-}?0"
 ''