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-rw-r--r--krebs/5pkgs/simple/cabal-read.nix35
-rw-r--r--tv/5pkgs/haskell/xmonad-tv/shell.nix13
2 files changed, 44 insertions, 4 deletions
diff --git a/krebs/5pkgs/simple/cabal-read.nix b/krebs/5pkgs/simple/cabal-read.nix
new file mode 100644
index 000000000..f8fc71e05
--- /dev/null
+++ b/krebs/5pkgs/simple/cabal-read.nix
@@ -0,0 +1,35 @@
+{ writeHaskellPackage }:
+
+# Because `sed -n 's/.*\<ghc-options:\s\+\(.*\)/\1/p'` is too simple.
+writeHaskellPackage "cabal-read" {
+ executables.ghc-options = {
+ extra-depends = ["Cabal"];
+ text = /* haskell */ ''
+ module Main (main) where
+ import Data.List
+ import Data.Maybe
+ import Distribution.Compiler
+ import Distribution.PackageDescription.Parsec
+ import Distribution.Types.BuildInfo
+ import Distribution.Types.CondTree
+ import Distribution.Types.Executable
+ import Distribution.Types.GenericPackageDescription
+ import Distribution.Types.UnqualComponentName
+ import Distribution.Verbosity
+ import System.Environment
+ main :: IO ()
+ main = do
+ [path, name] <- getArgs
+
+ desc <- readGenericPackageDescription normal path
+
+ case lookup (mkUnqualComponentName name) (condExecutables desc) of
+ Just exe ->
+ putStrLn . intercalate " " . fromMaybe [] . lookup GHC
+ . options . buildInfo . condTreeData $ exe
+
+ Nothing ->
+ error ("executable " <> name <> " not found in " <> path)
+ '';
+ };
+}
diff --git a/tv/5pkgs/haskell/xmonad-tv/shell.nix b/tv/5pkgs/haskell/xmonad-tv/shell.nix
index 936e69627..6ca00bc05 100644
--- a/tv/5pkgs/haskell/xmonad-tv/shell.nix
+++ b/tv/5pkgs/haskell/xmonad-tv/shell.nix
@@ -46,7 +46,7 @@ in
xmonad_restart() {(
set -efu
cd "$WORKDIR"
- if systemctl is-active xmonad; then
+ if systemctl --quiet is-active xmonad; then
sudo systemctl stop xmonad
cp -b "$config_XMONAD_CACHE_DIR"/xmonad.state "$CACHEDIR"/
echo "xmonad.state: $(cat "$CACHEDIR"/xmonad.state)"
@@ -59,9 +59,14 @@ in
xmonad_yield() {(
set -efu
- "$xmonad" --shutdown
- cp -b "$CACHEDIR"/xmonad.state "$config_XMONAD_CACHE_DIR"/
- sudo systemctl start xmonad
+ if ! systemctl --quiet is-active xmonad; then
+ "$xmonad" --shutdown
+ cp -b "$CACHEDIR"/xmonad.state "$config_XMONAD_CACHE_DIR"/
+ sudo systemctl start xmonad
+ else
+ echo "xmonad.service is already running" >&2
+ exit -1
+ fi
)}
export PATH=${config.systemd.services.xmonad.path}:$PATH