diff --git a/pkgs/by-name/ea/easel/package.nix b/pkgs/by-name/ea/easel/package.nix
new file mode 100644
index 000000000000..d172f891eb69
--- /dev/null
+++ b/pkgs/by-name/ea/easel/package.nix
@@ -0,0 +1,49 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  autoreconfHook,
+  perl,
+  python3,
+  versionCheckHook,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "easel";
+  version = "0.49";
+
+  src = fetchFromGitHub {
+    owner = "EddyRivasLab";
+    repo = "easel";
+    tag = "easel-${finalAttrs.version}";
+    hash = "sha256-NSKy7ptNYR0K/VFJNv+5TGWdC1ZM4Y5i/3L+3Coj/sg=";
+  };
+
+  nativeBuildInputs = [ autoreconfHook ];
+
+  enableParallelBuilding = true;
+
+  doCheck = true;
+
+  nativeCheckInputs = [
+    perl
+    python3
+  ];
+
+  preCheck = ''
+    patchShebangs devkit/sqc
+  '';
+
+  doInstallCheck = true;
+
+  nativeInstallCheckInputs = [ versionCheckHook ];
+
+  meta = {
+    description = "Sequence analysis library used by Eddy/Rivas lab code";
+    homepage = "https://github.com/EddyRivasLab/easel";
+    license = lib.licenses.bsd2;
+    mainProgram = "easel";
+    maintainers = with lib.maintainers; [ natsukium ];
+    platforms = lib.platforms.unix;
+  };
+})
diff --git a/pkgs/by-name/hm/hmmer/package.nix b/pkgs/by-name/hm/hmmer/package.nix
index 81d0cdb1ec81..ef70f6d37ca9 100644
--- a/pkgs/by-name/hm/hmmer/package.nix
+++ b/pkgs/by-name/hm/hmmer/package.nix
@@ -2,18 +2,44 @@
   lib,
   stdenv,
   fetchurl,
+  easel,
+  perl,
+  python3,
+  versionCheckHook,
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   version = "3.4";
   pname = "hmmer";
 
   src = fetchurl {
-    url = "http://eddylab.org/software/hmmer/${pname}-${version}.tar.gz";
-    sha256 = "sha256-ynDZT9DPJxvXBjQjqrsRbULeUzEXNDqbJ6ZcF/8G+/M=";
+    url = "http://eddylab.org/software/hmmer/hmmer-${finalAttrs.version}.tar.gz";
+    hash = "sha256-ynDZT9DPJxvXBjQjqrsRbULeUzEXNDqbJ6ZcF/8G+/M=";
   };
 
-  meta = with lib; {
+  enableParallelBuilding = true;
+
+  doCheck = true;
+
+  nativeCheckInputs = [
+    perl
+    python3
+  ];
+
+  preCheck = ''
+    install -Dm755 ${easel.src}/devkit/sqc easel/devkit/sqc
+    patchShebangs easel/devkit/sqc testsuite/* src/hmmpress.itest.pl
+  '';
+
+  doInstallCheck = true;
+
+  nativeInstallCheckInputs = [ versionCheckHook ];
+
+  versionCheckProgram = "${placeholder "out"}/bin/hmmalign";
+
+  versionCheckProgramArg = [ "-h" ];
+
+  meta = {
     description = "Biosequence analysis using profile hidden Markov models";
     longDescription = ''
       HMMER is used for searching sequence databases for sequence homologs, and for making sequence alignments. It implements methods using probabilistic models called profile hidden Markov models (profile HMMs).
@@ -22,10 +48,9 @@ stdenv.mkDerivation rec {
       HMMER can be downloaded and installed as a command line tool on your own hardware, and now it is also more widely accessible to the scientific community via new search servers at the European Bioinformatics Institute.
     '';
     homepage = "http://hmmer.org/";
-    changelog = "https://github.com/EddyRivasLab/hmmer/blob/hmmer-${version}/release-notes/RELEASE-${version}.md";
-    license = licenses.gpl3;
-    maintainers = [ maintainers.iimog ];
-    # at least SSE is *required*
-    platforms = platforms.x86_64;
+    changelog = "https://github.com/EddyRivasLab/hmmer/blob/hmmer-${finalAttrs.version}/release-notes/RELEASE-${finalAttrs.version}.md";
+    license = lib.licenses.bsd3;
+    maintainers = [ lib.maintainers.iimog ];
+    platforms = lib.platforms.unix;
   };
-}
+})