diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 31511176..6119a9d1 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -1,4 +1,5 @@
 name: Build Status
+
 on: [push, pull_request]
 
 jobs:
@@ -6,6 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
         python-version:
           - "3.6"
           - "3.7"
@@ -21,18 +23,23 @@ jobs:
     - name: Setup miniconda
       uses: conda-incubator/setup-miniconda@v2
       with:
-        miniconda-version: "latest"
- 
-    - name: Build environment
+        activate-environment: test
+        python-version: ${{ matrix.python-version }}
+        auto-activate-base: false
+    - name: Install dependencies
+      shell: bash -l {0}
+      run : |
+        conda install -c bioconda -c conda-forge \
+          ngless pyrodigal megahit paladin pandas atomium tzlocal \
+          "scikit-learn<1.3.0" "joblib<1.3.0"
+        conda install pytest
+        pip install .
+    - name: Test with pytest
+      shell: bash -l {0}
       run: |
-        conda install -y mamba -n base -c conda-forge
-        PYTHON_VERSION=${{ matrix.python-version }} ./install.sh
-        source /usr/share/miniconda3/bin/activate envs/Macrel_env/
-        # Using conda/mamba to install pytest can cause other packages to be downgraded!
-        pip install pytest
+        python -m pytest macrel/tests
 
-    - name: Test Macrel
+    - name: Test Macrel CLI
+      shell: bash -l {0}
       run: |
-        source /usr/share/miniconda3/bin/activate envs/Macrel_env/
         ./run-tests.sh
-        python -m pytest macrel/tests
diff --git a/docs/install.md b/docs/install.md
index aa9dcfb7..5029d0e0 100644
--- a/docs/install.md
+++ b/docs/install.md
@@ -9,17 +9,26 @@ conda install -c bioconda macrel
 
 ## Install from source
 
-If you want to use an unreleased version from Github, for example, we provide a
-script using _conda_ (in particular, using
-[bioconda](https://bioconda.github.io/) and
-[conda-forge](https://conda-forge.org/)) to install all dependencies in a
-Macrel-specific environment:
+If you want to use an unreleased version from Github, or tweak the code, we still recommend conda to manage the dependencies. You can install from source by running:
 
 ```bash
 git clone https://github.com/BigDataBiology/Macrel
 cd macrel
-./install.sh
-conda activate envs/Macrel_env
+
+conda create -n macrel_env
+conda activate macrel_env
+conda install -y \
+          ngless \
+          pyrodigal \
+          megahit \
+          paladin \
+          pandas \
+          "scikit-learn<1.3.0" \
+          "joblib<1.3.0" \
+          atomicwrites \
+          tzlocal
+
+pip install .
 ```
 
 Thereafter, to use macrel, activate this environment.
diff --git a/install.sh b/install.sh
deleted file mode 100755
index bb5b4867..00000000
--- a/install.sh
+++ /dev/null
@@ -1,73 +0,0 @@
-#!/usr/bin/env bash
-
-set -v
-set -e
-
-# This is set in travis
-if [[ x$PYTHON_VERSION == x ]]; then
-    PYTHON_VERSION=3.7
-fi
-
-
-echo "
-# Macrel - (Meta)genomic AMP Classification and Retrieval
-AUTHORS: Célio Dias Santos Júnior, Luis Pedro Coelho
-"
-
-if ! which conda > /dev/null; then
-    echo "[ Conda not found. Please install miniconda and add 'conda' to the PATH: "
-    echo "    curl -O https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh"
-    echo "    sh Miniconda3-latest-Linux-x86_64.sh"
-    exit 1
-fi
-
-eval "$(conda shell.bash hook)"
-
-BASEDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
-
-
-echo "# Creating new environment for Macrel"
-mkdir -p envs
-conda create --yes -p $BASEDIR/envs/Macrel_env python=$PYTHON_VERSION
-conda config --env --add channels defaults
-conda config --env --add channels bioconda
-conda config --env --add channels conda-forge
-
-if ! which mamba > /dev/null; then
-    CONDA_INSTALL_CMD=conda
-else
-    echo "# Installing packages with MAMBA"
-    CONDA_INSTALL_CMD=mamba
-fi
-
-${CONDA_INSTALL_CMD} install -y \
-          --prefix $BASEDIR/envs/Macrel_env \
-          ngless \
-          pyrodigal \
-          megahit \
-          paladin \
-          pandas \
-          "scikit-learn<1.3.0" \
-          "joblib<1.3.0" \
-          atomicwrites \
-          tzlocal
-
-# only activate AFTER install all the packages to get the right environmental variables
-source activate $BASEDIR/envs/Macrel_env
-
-# env forwards the current environment and sets some extra variables needed by
-# ./recipe/build.sh
-env \
-        PYTHON=$(which python) \
-        SRC_DIR=$PWD \
-        PREFIX=$CONDA_PREFIX \
-        ./recipe/build.sh
-
-
-echo "############ Installation procedures finished
-****** Thank you for installing Macrel ********
---- Please submit bugreports/comments to
-celio.diasjunior@gmail.com
-or
-https://github.com/BigDataBiology/macrel/issues
-"
diff --git a/recipe/build.sh b/recipe/build.sh
deleted file mode 100755
index 0a9052d0..00000000
--- a/recipe/build.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/bash
-
-set -e
-
-$PYTHON -m pip install --disable-pip-version-check --no-cache-dir --ignore-installed --no-deps -vv .