Add extraBinDirs setting

Author: thomasjm

modules/base.nix

@@ -33,6 +33,11 @@ with lib;
       type = types.attrsOf types.package;
       default = {};
     };
+
+    extraBinDirs = mkOption {
+      type = types.attrsOf (types.listOf types.package);
+      default = {};
+    };
   };
 
   config = {

nix/makeEnvironment.nix

@@ -2,6 +2,7 @@
 , lib
 , fetchgit
 , fetchFromGitHub
+, runCommand
 , symlinkJoin
 , system
 , writeTextDir
@@ -65,6 +66,16 @@ let
       meta = chooseMeta pkg;
     };
 
+  linkBinaries = newBin: inputs: runCommand "${name}-${newBin}" {} ''
+    mkdir -p "$out/${newBin}"
+
+    for input in ${builtins.toString inputs}; do
+      find "$input/bin" -type f -executable | while read -r executable; do
+        ln -s "$executable" "$out/${newBin}/$(basename "$executable")"
+      done
+    done
+  '';
+
 in
 
 symlinkJoin {
@@ -74,6 +85,7 @@ symlinkJoin {
     ++ attrValues evaluated.config.builtLanguageServers
     ++ lib.optionals (builtins.length exporters > 0) [(writeTextDir "lib/codedown/exporters.yaml" (lib.generators.toYAML {} exporters))]
     ++ attrValues evaluated.config.packages
+    ++ lib.mapAttrsToList linkBinaries evaluated.config.extraBinDirs
   ;
 
   passthru = rec {

sample_environments/bash.nix

@@ -1,7 +1,14 @@
 { codedown
+, pkgsStable
 , ...
 }:
 
 codedown.makeEnvironment {
   kernels.bash.enable = true;
+
+  extraBinDirs = {
+    "runner_bin" = [
+      pkgsStable.tmux
+    ];
+  };
 }