Mod of posh pure theme to include conda env information in prompt (a bit slow but ¯\_(ツ)_/¯)

pure-python.psm1

#requires -Version 2 -Modules posh-git

function Get-CondaEnv {
    $condaEnvInfo = (
        Invoke-Conda env list 
        | Select-String -Pattern '^(\w+)\s+\*\s+(.*)$'  # name, then prefix
    )
    return $condaEnvInfo.matches.groups[1]
}

function Test-CommandExists {
    param(
        [string] $Command,
        [switch] $Verbose
    )

    # Set error action preference
    $oldPreference = $ErrorActionPreference
    $ErrorActionPreference = 'stop'

    # Check for command
    try {
        if (Get-Command $Command) {
            if ($Verbose) {
                Write-Host "Found ${Command} in $($(Get-Command $Command).Source)"
            }
            return $true
        }
    }
    catch {
        if ($Verbose) {
            Write-Host "$Command does not exist"
        }
        return $false 
    }
    finally {
        $ErrorActionPreference = $oldPreference   
    }
}

function Write-Theme {
    param(
        [bool] $lastCommandFailed,
        [string] $with
    )

    #check the last command state and indicate if failed
    $promtSymbolColor = $sl.Colors.PromptSymbolColor
    If ($lastCommandFailed) {
        $promtSymbolColor = $sl.Colors.WithForegroundColor
    }

    # Writes the drive portion
    $drive = Get-FullPath -dir $pwd
    $prompt += Write-Prompt -Object $drive -ForegroundColor $sl.Colors.DriveForegroundColor

    $prompt += Write-Prompt -Object ' '

    $status = Get-VCSStatus
    if ($status) {
        $prompt += Write-Prompt -Object "$($status.Branch)" -ForegroundColor $sl.Colors.WithForegroundColor
        if ($status.Working.Length -gt 0) {
            $prompt += Write-Prompt -Object (" " + $sl.PromptSymbols.GitDirtyIndicator) -ForegroundColor $sl.Colors.GitDefaultColor
        }
    }

    # Write out conda environment
    if (Test-CommandExists Invoke-Conda) {
        if (!$env:CONDA_ENV) { $env:CONDA_ENV = Get-CondaEnv }
        $prompt += Write-Prompt -Object " (🐍 $env:CONDA_ENV)" -ForegroundColor $sl.Colors.DriveForegroundColor
    }

    # New line
    $prompt += Set-Newline

    # Writes the postfixes to the prompt
    $prompt += Write-Prompt -Object ($sl.PromptSymbols.PromptIndicator) -ForegroundColor $promtSymbolColor
    
    $prompt += ' '
    $prompt
}

$sl = $global:ThemeSettings #local settings
$sl.PromptSymbols.PromptIndicator = [char]::ConvertFromUtf32(0x276f)
$sl.Colors.PromptSymbolColor = [ConsoleColor]::Green
$sl.Colors.PromptHighlightColor = [ConsoleColor]::Blue
$sl.Colors.DriveForegroundColor = [ConsoleColor]::Cyan
$sl.Colors.WithForegroundColor = [ConsoleColor]::Red
$sl.PromptSymbols.GitDirtyIndicator = [char]::ConvertFromUtf32(10007)
$sl.Colors.GitDefaultColor = [ConsoleColor]::Yellow

Stick this in \path\to\PoshThemes\pure-python.psm1. Find the path to your posh themes by printing $ThemeSettings.

example:

~\Developer\someCode master ✗ (🐍 someCodeConda)
❯

Now stores the conda environment in $env:CONDA_ENV rather than running a query every time the prompt refreshes. Much better.