From 50b2ef28f72a824efc0dde96094133fc07a36433 Mon Sep 17 00:00:00 2001
From: Andreas Rammhold <andreas@rammhold.de>
Date: Wed, 11 Dec 2019 22:27:12 +0100
Subject: buildRustCrate: move the color loggign & remove some runtime checks

The expression is already long and confusing enough without the color
stuff sprinkled in. Moving it to a dedicated file makes sense.

I switched a bit of the color support code to pure Nix since there
wasn't much point in doing that in bash while we can just do it in Nix.
---
 pkgs/build-support/rust/build-rust-crate/log.nix | 33 ++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 pkgs/build-support/rust/build-rust-crate/log.nix

(limited to 'pkgs/build-support/rust/build-rust-crate/log.nix')

diff --git a/pkgs/build-support/rust/build-rust-crate/log.nix b/pkgs/build-support/rust/build-rust-crate/log.nix
new file mode 100644
index 00000000000..25181c787e2
--- /dev/null
+++ b/pkgs/build-support/rust/build-rust-crate/log.nix
@@ -0,0 +1,33 @@
+{ lib }:
+{
+  echo_build_heading = colors: ''
+    echo_build_heading() {
+     start=""
+     end=""
+     ${lib.optionalString (colors == "always") ''
+       start="$(printf '\033[0;1;32m')" #set bold, and set green.
+       end="$(printf '\033[0m')" #returns to "normal"
+     ''}
+     if (( $# == 1 )); then
+       echo "$start""Building $1""$end"
+     else
+       echo "$start""Building $1 ($2)""$end"
+     fi
+    }
+  '';
+  noisily = colors: verbose: ''
+    noisily() {
+      start=""
+      end=""
+      ${lib.optionalString (colors == "always") ''
+        start="$(printf '\033[0;1;32m')" #set bold, and set green.
+        end="$(printf '\033[0m')" #returns to "normal"
+      ''}
+  	  ${lib.optionalString verbose ''
+        echo -n "$start"Running "$end"
+        echo $@
+  	  ''}
+  	  $@
+    }
+  '';
+}
-- 
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