run-opossum

1 files changed, 65 insertions, 0 deletions

diff --git a/custom/run-opossum@bragi.nix b/custom/run-opossum@bragi.nix
new file mode 100644
index 00000000..b1ef30c7
--- /dev/null
+++ b/custom/run-opossum@bragi.nix
@@ -0,0 +1,65 @@
+{ stdenv
+, zsh
+, findutils
+, coreutils
+, makeWrapper
+, wombat
+, opossum
+}:
+
+stdenv.mkDerivation {
+  name = "run-opossum-${version}";
+  version = "0.0.0";
+  buildInputs = [ makeWrapper ];
+        src = builtins.toFile name ''
+    #!${zsh}/bin/zsh
+
+    oversized() {
+      l=$(du -BG -s -t 75 $BEUTEL | wc -l)
+      [[ $l -ge 1 ]]
+    }
+
+    echo "Started $(date)" > $LOGFILE
+    opossum &>> $LOGFILE
+
+    wombat search "(not (seen or hidden)) and (not forced)" | \
+      xargs -r -n 1 -d '\n' -- wombat force \
+      &>> $LOGFILE
+
+    find $BEUTEL -type f -iname '*.tgz.bak' -delete
+
+    if oversized; then
+      wombat search "(seen or hidden) and forced" | \
+      while (read file && oversized); do
+        wombat reset $file
+        find $BEUTEL -type f -iname '*.tgz.bak' -delete
+      done
+
+      wombat search "seen or hidden" | \
+        while (read file && oversized); do
+          wombat delete $file
+          size=$(du -BG $BEUTEL)
+        done
+    fi
+
+    echo "Ended $(date)" >> $LOGFILE
+        '';
+  phases = [ "buildPhase"
+             "installPhase"
+           ];
+  buildPhase = ''
+    cp -prd --no-preserve=timestamps $src run-opossum.sh
+  '';
+  installPhase = ''
+    mkdir -p $out/bin
+    cp run-opossum.sh $out/bin
+    chmod +x $out/bin/run-opossum.sh
+    wrapProgram $out/bin/run-opossum.sh \
+      --prefix PATH : ${wombat}/bin \
+      --prefix PATH : ${opossum}/bin \
+      --prefix PATH : ${findutils}/bin \
+      --prefix PATH : ${coreutils}/bin \
+      --set BEUTEL $HOME/.beutel \
+      --set LOGFILE $HOME/.last_opossum.log
+  '';
+}