diff --git a/pkgs/applications/science/engineering/brmodelo/default.nix b/pkgs/applications/science/engineering/brmodelo/default.nix
index c484260d25f3..09225fcd5948 100644
--- a/pkgs/applications/science/engineering/brmodelo/default.nix
+++ b/pkgs/applications/science/engineering/brmodelo/default.nix
@@ -2,27 +2,34 @@
 , stdenv
 , fetchFromGitHub
 , fetchpatch
-, openjdk8
 , ant
+, jdk8
 , makeWrapper
 , makeDesktopItem
 , copyDesktopItems
+, strip-nondeterminism
+, stripJavaArchivesHook
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "brmodelo";
   version = "3.31";
 
   src = fetchFromGitHub {
     owner = "chcandido";
-    repo = pname;
-    rev = version;
-    sha256 = "09qrhqhv264x8phnf3pnb0cwq75l7xdsj9xkwlvhry81nxz0d5v0";
+    repo = "brmodelo";
+    rev = finalAttrs.version;
+    hash = "sha256-YJcGfrcB+Qw35bMnqVs/tBzMGVj2DmfhRZ0YsSGGGSc=";
   };
 
-  nativeBuildInputs = [ ant makeWrapper copyDesktopItems ];
-
-  buildInputs = [ openjdk8 ];
+  nativeBuildInputs = [
+    ant
+    jdk8
+    makeWrapper
+    copyDesktopItems
+    strip-nondeterminism
+    stripJavaArchivesHook
+  ];
 
   patches = [
     # Fixes for building with Ant.
@@ -30,22 +37,22 @@ stdenv.mkDerivation rec {
     (fetchpatch {
       name = "fix-self-closing-element-not-allowed.patch";
       url = "https://github.com/yuuyins/brModelo/commit/0d712b74fd5d29d67be07480ed196da28a77893b.patch";
-      sha256 = "sha256-yy03arE6xetotzyvpToi9o9crg3KnMRn1J70jDUvSXE=";
+      hash = "sha256-yy03arE6xetotzyvpToi9o9crg3KnMRn1J70jDUvSXE=";
     })
     (fetchpatch {
       name = "fix-tag-closing.patch";
       url = "https://github.com/yuuyins/brModelo/commit/e8530ff75f024cf6effe0408ed69985405e9709c.patch";
-      sha256 = "sha256-MNuh/ORbaAkB5qDSlA/nPrXN+tqzz4oOglVyEtSangI=";
+      hash = "sha256-MNuh/ORbaAkB5qDSlA/nPrXN+tqzz4oOglVyEtSangI=";
     })
     (fetchpatch {
       name = "fix-bad-use-greater-than.patch";
       url = "https://github.com/yuuyins/brModelo/commit/498a6ef8129daff5a472b318f93c8f7f2897fc7f.patch";
-      sha256 = "sha256-MmAwYUmx38DGRsiSxCWCObtpqxk0ykUQiDSC76bCpFc=";
+      hash = "sha256-MmAwYUmx38DGRsiSxCWCObtpqxk0ykUQiDSC76bCpFc=";
     })
     (fetchpatch {
       name = "fix-param-errors.patch";
       url = "https://github.com/yuuyins/brModelo/commit/8a508aaba0bcffe13a3f95cff495230beea36bc4.patch";
-      sha256 = "sha256-qME9gZChSMzu1vs9HaosD+snb+jlOrQLY97meNoA8oU=";
+      hash = "sha256-qME9gZChSMzu1vs9HaosD+snb+jlOrQLY97meNoA8oU=";
     })
 
     # Add SVG icons.
@@ -53,12 +60,14 @@ stdenv.mkDerivation rec {
     (fetchpatch {
       name = "add-brmodelo-logo-icons-svg.patch";
       url = "https://github.com/yuuyins/brModelo/commit/f260b82b664fad3325bbf3ebd7a15488d496946b.patch";
-      sha256 = "sha256-UhgcWxsHkNFS1GgaRnmlZohjDR8JwHof2cIb3SBetYs=";
+      hash = "sha256-UhgcWxsHkNFS1GgaRnmlZohjDR8JwHof2cIb3SBetYs=";
     })
   ];
 
   buildPhase = ''
+    runHook postBuild
     ant
+    runHook preBuild
   '';
 
   desktopItems = [
@@ -68,15 +77,16 @@ stdenv.mkDerivation rec {
       genericName = "Entity-relationship diagramming tool";
       exec = "brmodelo";
       icon = "brmodelo";
-      comment = meta.description;
+      comment = finalAttrs.meta.description;
       categories = [ "Development" "Education" "Database" "2DGraphics" "ComputerScience" "DataVisualization" "Engineering" "Java" ];
     })
   ];
 
   installPhase = ''
-    install -d $out/bin $out/share/doc/${pname} $out/share/java
+    runHook preInstall
 
-    cp -rv ./dist/javadoc $out/share/doc/${pname}/
+    mkdir -p $out/share/doc/brmodelo
+    cp -rv ./dist/javadoc $out/share/doc/brmodelo/
 
     install -Dm755 ./dist/brModelo.jar -t $out/share/java/
     # NOTE: The standard Java GUI toolkit has a
@@ -85,26 +95,28 @@ stdenv.mkDerivation rec {
     # in WMs that are not in that list (e.g. XMonad).
     # Solution/Workaround: set the environment variable
     # _JAVA_AWT_WM_NONREPARENTING=1.
-    makeWrapper ${openjdk8}/bin/java $out/bin/brmodelo \
+    makeWrapper ${jdk8}/bin/java $out/bin/brmodelo \
        --prefix _JAVA_AWT_WM_NONREPARENTING : 1 \
        --prefix _JAVA_OPTIONS : "-Dawt.useSystemAAFontSettings=on" \
        --add-flags "-jar $out/share/java/brModelo.jar"
 
-    runHook postInstall
-  '';
-
-  postInstall = ''
     for size in 16 24 32 48 64 128 256; do
       install -Dm644 ./src/imagens/icone_"$size"x"$size".svg \
         $out/share/icons/hicolor/"$size"x"$size"/apps/brmodelo.svg
     done
+
+    runHook postInstall
+  '';
+
+  preFixup = ''
+    find $out/share/doc/brmodelo/javadoc -name "*.html" -exec strip-nondeterminism --type javadoc {} +
   '';
 
   meta = with lib; {
     description = "Entity-relationship diagram tool for making conceptual and logical database models";
-    mainProgram = "brmodelo";
     homepage = "https://github.com/chcandido/brModelo";
     license = licenses.gpl3;
+    mainProgram = "brmodelo";
     maintainers = with maintainers; [ yuu ];
   };
-}
+})