From e8459a4a34f2611a547b966b2c58867d99d0f40c Mon Sep 17 00:00:00 2001
From: pacien
Date: Mon, 14 Nov 2022 00:39:47 +0100
Subject: mkDevShell: extract shell hooks

---
 lib/mk-dev-shell.nix | 47 ++++++-----------------------------------------
 1 file changed, 6 insertions(+), 41 deletions(-)

(limited to 'lib/mk-dev-shell.nix')

diff --git a/lib/mk-dev-shell.nix b/lib/mk-dev-shell.nix
index 87b9dbb..4f46d69 100644
--- a/lib/mk-dev-shell.nix
+++ b/lib/mk-dev-shell.nix
@@ -1,58 +1,23 @@
+flake:
 { pkgs
 , tools ? []
 , envVars ? {}
 , shell ? null
 }:
 
-with pkgs.lib;
-
 let
-  mapAttrsToLines = mapping: attrs:
-    pkgs.lib.concatStringsSep "\n" (pkgs.lib.mapAttrsToList mapping attrs);
-
-  exportEnvVar = k: v: ''
-    export ${escapeShellArg k}="${v}"
-  '';
-
-  exportEnvVarsHook = mapAttrsToLines exportEnvVar;
-
-  fmt = rec {
-    codeBlock = code: text: ''"\e[${code}m"${text}"\e[0m"'';
-    keyword = codeBlock "1;36";
-    section = codeBlock "4;35";
-    printSectionTitle = title: ''echo -e "\n\n"${section title}"\n"'';
-  };
-
-  printEnvVar = k: v: ''
-    echo -e ${fmt.keyword (escapeShellArg "$" + k)}: ${escapeShellArg v}
-  '';
-
-  printEnvVarsHook = envVars: ''
-    ${fmt.printSectionTitle "DEVSHELL ENVIRONMENT VARIABLES"}
-    ${mapAttrsToLines printEnvVar envVars}
-  '';
-
-  printToolsHook = tools: ''
-    ${fmt.printSectionTitle "DEVSHELL TOOLS"}
-    ls "${pkgs.symlinkJoin { name = "env"; paths = tools; }}/bin"
-  '';
-
-  # Use the default user shell instead of Bash
-  startUserShellHook = ''
-    $(${pkgs.finger_bsd}/bin/finger $USER \
-      | ${pkgs.gnugrep}/bin/grep -oP 'Shell: \K.*')
-  '';
+  shellLib = flake.lib.shell { inherit pkgs; };
 
 in pkgs.mkShell {
   packages = tools;
   shellHook = ''
-    ${exportEnvVarsHook envVars}
+    ${shellLib.exportEnvVars envVars}
 
-    ${optionalString (envVars != {}) (printEnvVarsHook envVars)}
-    ${optionalString (tools != []) (printToolsHook tools)}
+    ${pkgs.lib.optionalString (envVars != {}) (shellLib.printEnvVars envVars)}
+    ${pkgs.lib.optionalString (tools != []) (shellLib.printBins tools)}
     echo
 
-    ${if (shell != null) then shell else startUserShellHook}
+    ${if (shell != null) then shell else shellLib.startUserShell}
     exit $?
   '';
 }
-- 
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