pkgs: get functions via rec

To import the writers outside of an overlay

pkgs/default.nix

@@ -1,8 +1,8 @@
 with import ../lib;
 
-pkgs: oldpkgs: {
+pkgs: oldpkgs: rec {
   execve = name: { filename, argv ? null, envp ? {}, destination ? "" }:
-    pkgs.writeC name { inherit destination; } /* c */ ''
+    writeC name { inherit destination; } /* c */ ''
       #include <unistd.h>
 
       static char *const filename = ${toC filename};
@@ -27,11 +27,11 @@ pkgs: oldpkgs: {
     '';
 
   execveBin = name: cfg:
-    pkgs.execve name (cfg // { destination = "/bin/${name}"; });
+    execve name (cfg // { destination = "/bin/${name}"; });
 
   makeScriptWriter = { interpreter, check ? null }: name: text:
     assert (with types; either absolute-pathname filename).check name;
-    pkgs.write (baseNameOf name) {
+    write (baseNameOf name) {
       ${optionalString (types.absolute-pathname.check name) name} = {
         inherit check;
         executable = true;
@@ -110,7 +110,7 @@ pkgs: oldpkgs: {
 
   writeBash = name: text:
     assert (with types; either absolute-pathname filename).check name;
-    pkgs.write (baseNameOf name) {
+    write (baseNameOf name) {
       ${optionalString (types.absolute-pathname.check name) name} = {
         executable = true;
         text = "#! ${pkgs.bash}/bin/bash\n${text}";
@@ -119,7 +119,7 @@ pkgs: oldpkgs: {
 
   writeBashBin = name:
     assert types.filename.check name;
-    pkgs.writeBash "/bin/${name}";
+    writeBash "/bin/${name}";
 
   writeC = name: { destination ? "" }: text: pkgs.runCommand name {
     inherit text;
@@ -137,13 +137,13 @@ pkgs: oldpkgs: {
     strip --strip-unneeded "$exe"
   '';
 
-  writeDash = pkgs.makeScriptWriter {
+  writeDash = makeScriptWriter {
     interpreter = "${pkgs.dash}/bin/dash";
   };
 
   writeDashBin = name:
     assert types.filename.check name;
-    pkgs.writeDash "/bin/${name}";
+    writeDash "/bin/${name}";
 
   writeEximConfig = name: text: pkgs.runCommand name {
     inherit text;
@@ -259,9 +259,9 @@ pkgs: oldpkgs: {
 
   writeJq = name: text:
     assert (with types; either absolute-pathname filename).check name;
-    pkgs.write (baseNameOf name) {
+    write (baseNameOf name) {
       ${optionalString (types.absolute-pathname.check name) name} = {
-        check = pkgs.writeDash "jqcheck.sh" ''
+        check = writeDash "jqcheck.sh" ''
           exec ${pkgs.jq}/bin/jq -f "$1" < /dev/null
         '';
         inherit text;
@@ -288,31 +288,31 @@ pkgs: oldpkgs: {
   let
     py = pkgs.python2.withPackages(ps: attrVals deps ps);
   in
-  pkgs.makeScriptWriter {
+  makeScriptWriter {
     interpreter = "${py}/bin/python";
-    check = pkgs.writeDash "python2check.sh" ''
+    check = writeDash "python2check.sh" ''
       exec ${pkgs.python2Packages.flake8}/bin/flake8 --show-source "$1"
     '';
   } name;
 
-  writePython2Bin = name:
-    pkgs.writePython2 "/bin/${name}";
+  writePython2Bin = d: name:
+    writePython2 d "/bin/${name}";
 
   writePython3 = name: deps:
   let
     py = pkgs.python3.withPackages(ps: attrVals deps ps);
   in
-  pkgs.makeScriptWriter {
+  makeScriptWriter {
     interpreter = "${py}/bin/python";
-    check = pkgs.writeDash "python3check.sh" ''
+    check = writeDash "python3check.sh" ''
       exec ${pkgs.python3Packages.flake8}/bin/flake8 --show-source "$1"
     '';
   } name;
 
-  writePython3Bin = name:
-    pkgs.writePython3 "/bin/${name}";
+  writePython3Bin = d: name:
+    writePython3 d "/bin/${name}";
 
-  writeSed = pkgs.makeScriptWriter {
+  writeSed = makeScriptWriter {
     interpreter = "${pkgs.gnused}/bin/sed -f";
   };
 }