finished initial draft of script, needs testing

README.md

@@ -1,3 +1,5 @@
 # Python-Environment-Setup
 
-This script will setup Miniconda, Visual Studio Code, and Git for you
+This script will setup Miniconda, Visual Studio Code, and Git for you
+
+To run this setup script, from a command line, change to the directory that contains the script and  run `powershell -File .\setup.ps1`

setup.ps1

@@ -4,22 +4,60 @@ $cur_compat_mode = Get-ItemProperty -Path $reg_path -Name IntranetCompatibilityM
 New-ItemProperty -Path $reg_path -Name IntranetCompatibilityMode -Value 0 -Force | Out-Null
 #now that compatibility mode is off temporarily, we can scrape the web
 
-#Setup Miniconda
-$miniconda_url = "https://repo.anaconda.com/miniconda/Miniconda3-latest-Windows-x86_64.exe"
-$miniconda_installer = $miniconda_url.split('/')[-1]
-#Silent mode command line flags: https://docs.anaconda.com/anaconda/install/silent-mode/
-$miniconda_install_params = '/S', '/D="$HOME\Miniconda3"', '/InstallationType=JustMe', '/RegisterPython=0', '/AddToPath=0'
-Invoke-WebRequest  $miniconda_url -OutFile $miniconda_installer
-Invoke-Expression "& .\$miniconda_installer $miniconda_install_params"
-#Remove-Item ".\$miniconda_installer"
-$conda_exe = "$HOME\Miniconda3\Scripts\conda.exe"
-Invoke-Expression "& $conda_exe init"
+$default_install_paths = $HOME, $env:ProgramFiles
 
-#Setup Visual Studio Code
+Write-Host "Checking for existing installations of Anaconda or Miniconda.  This may take a few minutes..."
+$conda_installed = $default_install_paths | ForEach-Object -Process {Get-ChildItem -Recurse -File -Force -Filter conda.exe -ErrorAction SilentlyContinue | Select-Object -First 1}
 
-$vscode_url = "https://aka.ms/win32-x64-user-stable"
+$install_miniconda = -Not $conda_installed
 
-$git_url = Invoke-WebRequest "https://git-scm.com/download/win" | Select-Object -ExpandProperty Links | Where-Object innerText -like "64-bit Git for Windows Setup" | Select-Object -ExpandProperty href
-$git_installer = $git_url.split('/')[-1]
-Invoke-WebRequest $git_url -OutFile $git_installer
-Invoke-Expression "& .\$git_installer /VERYSILENT /LOADINF=.\git.inf"
+if ($conda_installed) {
+    write-host "
+    You appear to have Anaconda or Miniconda installed already.
+    Installing Miniconda on top of it may have unintended side-effects of breaking your existing installation.
+    "
+    $user_input = (Read-Host -Prompt "Continue Installation of Miniconda anyway? [yes|(no)] ").ToLower()
+    $install_miniconda = ("y","yes") -contains $user_input
+}
+else{
+    Write-Host "No Anaconda or Miniconda installation detected.`n"
+}
+
+if ($install_miniconda) {
+    #Setup Miniconda
+    Write-Host "Installing Miniconda...`n`n"
+    $miniconda_url = "https://repo.anaconda.com/miniconda/Miniconda3-latest-Windows-x86_64.exe"
+    $miniconda_installer = $miniconda_url.split('/')[-1]
+
+    #Silent mode command line flags: https://docs.anaconda.com/anaconda/install/silent-mode/
+    $miniconda_install_params = '/S', '/D="$HOME\Miniconda3"', '/InstallationType=JustMe', '/RegisterPython=0', '/AddToPath=0'
+    Invoke-WebRequest  $miniconda_url -OutFile $miniconda_installer
+    Invoke-Expression "& .\$miniconda_installer $miniconda_install_params"
+    #Remove-Item ".\$miniconda_installer"
+    $conda_exe = "$HOME\Miniconda3\Scripts\conda.exe"
+    #Make conda accessible from any/all shells
+    Invoke-Expression "& $conda_exe init --all"
+}
+
+if (-Not (Test-Path "$HOME\AppData\Local\Programs\Microsoft VS Code\Code.exe")){
+    #Setup Visual Studio Code
+    Write-Host "Installing Microsoft Visual Studio Code...`n`n"
+    $vscode_url = "https://aka.ms/win32-x64-user-stable"
+    ((Invoke-WebRequest -Method Head $vscode_url).Headers["Content-Disposition"]) -match '"(.+)"' | Out-Null
+    $vscode_installer = $Matches[1]
+    Invoke-WebRequest $vscode_url -OutFile $vscode_installer
+    Invoke-Expression "& .\$vscode_installer /VERYSILENT /LOADINF=.\vscode.inf"
+}
+
+
+
+if ((Test-Path "$env:LOCALAPPDATA\Programs\Git\bin\git.exe") -or (Test-Path "$env:ProgramFiles\Git\bin\git.exe")){
+    Write-Host "Installing Git...`n`n"
+    $git_url = Invoke-WebRequest "https://git-scm.com/download/win" | Select-Object -ExpandProperty Links | Where-Object innerText -like "64-bit Git for Windows Setup" | Select-Object -ExpandProperty href
+    $git_installer = $git_url.split('/')[-1]
+    Invoke-WebRequest $git_url -OutFile $git_installer
+    Invoke-Expression "& .\$git_installer /VERYSILENT /LOADINF=.\git.inf"
+}
+
+#restore IE compatibility mode setting
+New-ItemProperty -Path $reg_path -Name IntranetCompatibilityMode -Value $cur_compat_mode -Force | Out-Null

vscode.inf

@@ -0,0 +1,6 @@
+[Setup]
+Lang=english
+Dir=%LOCALAPPDATA%\Programs\Microsoft VS Code
+Group=Visual Studio Code
+NoIcons=0
+Tasks=desktopicon,addcontextmenufiles,addcontextmenufolders,associatewithfiles,addtopath