making some progress

.venv/bin/Activate.ps1

@@ -219,6 +219,8 @@ deactivate -nondestructive
 # that there is an activated venv.
 $env:VIRTUAL_ENV = $VenvDir
 
+$env:VIRTUAL_ENV_PROMPT = $Prompt
+
 if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
 
     Write-Verbose "Setting prompt to '$Prompt'"
@@ -233,7 +235,6 @@ if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
         Write-Host -NoNewline -ForegroundColor Green "($_PYTHON_VENV_PROMPT_PREFIX) "
         _OLD_VIRTUAL_PROMPT
     }
-    $env:VIRTUAL_ENV_PROMPT = $Prompt
 }
 
 # Clear PYTHONHOME

.venv/bin/activate

@@ -14,8 +14,9 @@ deactivate () {
         unset _OLD_VIRTUAL_PYTHONHOME
     fi
 
-    # Call hash to forget past commands. Without forgetting
-    # past commands the $PATH changes we made may not be respected
+    # Call hash to forget past locations. Without forgetting
+    # past locations the $PATH changes we made may not be respected.
+    # See "man bash" for more details. hash is usually a builtin of your shell
     hash -r 2> /dev/null
 
     if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
@@ -36,19 +37,26 @@ deactivate () {
 deactivate nondestructive
 
 # on Windows, a path can contain colons and backslashes and has to be converted:
-if [ "${OSTYPE:-}" = "cygwin" ] || [ "${OSTYPE:-}" = "msys" ] ; then
-    # transform D:\path\to\venv to /d/path/to/venv on MSYS
-    # and to /cygdrive/d/path/to/venv on Cygwin
-    export VIRTUAL_ENV=$(cygpath "/home/dadams/Repos/california_equity_git/.venv")
-else
-    # use the path as-is
-    export VIRTUAL_ENV="/home/dadams/Repos/california_equity_git/.venv"
-fi
+case "$(uname)" in
+    CYGWIN*|MSYS*|MINGW*)
+        # transform D:\path\to\venv to /d/path/to/venv on MSYS and MINGW
+        # and to /cygdrive/d/path/to/venv on Cygwin
+        VIRTUAL_ENV=$(cygpath /home/dadams/Repos/california_equity_git/.venv)
+        export VIRTUAL_ENV
+        ;;
+    *)
+        # use the path as-is
+        export VIRTUAL_ENV=/home/dadams/Repos/california_equity_git/.venv
+        ;;
+esac
 
 _OLD_VIRTUAL_PATH="$PATH"
-PATH="$VIRTUAL_ENV/bin:$PATH"
+PATH="$VIRTUAL_ENV/"bin":$PATH"
 export PATH
 
+VIRTUAL_ENV_PROMPT=.venv
+export VIRTUAL_ENV_PROMPT
+
 # unset PYTHONHOME if set
 # this will fail if PYTHONHOME is set to the empty string (which is bad anyway)
 # could use `if (set -u; : $PYTHONHOME) ;` in bash
@@ -59,10 +67,8 @@ fi
 
 if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then
     _OLD_VIRTUAL_PS1="${PS1:-}"
-    PS1="(.venv) ${PS1:-}"
+    PS1="(".venv") ${PS1:-}"
     export PS1
-    VIRTUAL_ENV_PROMPT="(.venv) "
-    export VIRTUAL_ENV_PROMPT
 fi
 
 # Call hash to forget past commands. Without forgetting

.venv/bin/activate.csh

@@ -9,17 +9,17 @@ alias deactivate 'test $?_OLD_VIRTUAL_PATH != 0 && setenv PATH "$_OLD_VIRTUAL_PA
 # Unset irrelevant variables.
 deactivate nondestructive
 
-setenv VIRTUAL_ENV "/home/dadams/Repos/california_equity_git/.venv"
+setenv VIRTUAL_ENV /home/dadams/Repos/california_equity_git/.venv
 
 set _OLD_VIRTUAL_PATH="$PATH"
-setenv PATH "$VIRTUAL_ENV/bin:$PATH"
+setenv PATH "$VIRTUAL_ENV/"bin":$PATH"
+setenv VIRTUAL_ENV_PROMPT .venv
 
 
 set _OLD_VIRTUAL_PROMPT="$prompt"
 
 if (! "$?VIRTUAL_ENV_DISABLE_PROMPT") then
-    set prompt = "(.venv) $prompt"
-    setenv VIRTUAL_ENV_PROMPT "(.venv) "
+    set prompt = "(".venv") $prompt:q"
 endif
 
 alias pydoc python -m pydoc

.venv/bin/activate.fish

@@ -33,10 +33,11 @@ end
 # Unset irrelevant variables.
 deactivate nondestructive
 
-set -gx VIRTUAL_ENV "/home/dadams/Repos/california_equity_git/.venv"
+set -gx VIRTUAL_ENV /home/dadams/Repos/california_equity_git/.venv
 
 set -gx _OLD_VIRTUAL_PATH $PATH
-set -gx PATH "$VIRTUAL_ENV/bin" $PATH
+set -gx PATH "$VIRTUAL_ENV/"bin $PATH
+set -gx VIRTUAL_ENV_PROMPT .venv
 
 # Unset PYTHONHOME if set.
 if set -q PYTHONHOME
@@ -56,7 +57,7 @@ if test -z "$VIRTUAL_ENV_DISABLE_PROMPT"
         set -l old_status $status
 
         # Output the venv prompt; color taken from the blue of the Python logo.
-        printf "%s%s%s" (set_color 4B8BBE) "(.venv) " (set_color normal)
+        printf "%s(%s)%s " (set_color 4B8BBE) .venv (set_color normal)
 
         # Restore the return status of the previous command.
         echo "exit $old_status" | .
@@ -65,5 +66,4 @@ if test -z "$VIRTUAL_ENV_DISABLE_PROMPT"
     end
 
     set -gx _OLD_FISH_PROMPT_OVERRIDE "$VIRTUAL_ENV"
-    set -gx VIRTUAL_ENV_PROMPT "(.venv) "
 end

.venv/bin/f2py

@@ -1,4 +1,4 @@
-#!/home/dadams/Repos/california_equity_git/.venv/bin/python
+#!/home/dadams/Repos/california_equity_git/.venv/bin/python3.13
 # -*- coding: utf-8 -*-
 import re
 import sys

.venv/bin/numpy-config

@@ -1,4 +1,4 @@
-#!/home/dadams/Repos/california_equity_git/.venv/bin/python
+#!/home/dadams/Repos/california_equity_git/.venv/bin/python3.13
 # -*- coding: utf-8 -*-
 import re
 import sys

.venv/bin/pip

@@ -1,4 +1,4 @@
-#!/home/dadams/Repos/california_equity_git/.venv/bin/python
+#!/home/dadams/Repos/california_equity_git/.venv/bin/python3.13
 # -*- coding: utf-8 -*-
 import re
 import sys

.venv/bin/pip3

@@ -1,4 +1,4 @@
-#!/home/dadams/Repos/california_equity_git/.venv/bin/python
+#!/home/dadams/Repos/california_equity_git/.venv/bin/python3.13
 # -*- coding: utf-8 -*-
 import re
 import sys

.venv/bin/pyproj

@@ -1,4 +1,4 @@
-#!/home/dadams/Repos/california_equity_git/.venv/bin/python
+#!/home/dadams/Repos/california_equity_git/.venv/bin/python3.13
 # -*- coding: utf-8 -*-
 import re
 import sys

.venv/pyvenv.cfg

@@ -1,5 +1,5 @@
 home = /usr/bin
 include-system-site-packages = false
-version = 3.12.7
-executable = /usr/bin/python3.12
-command = /usr/bin/python -m venv /home/dadams/Repos/california_equity_git/.venv
+version = 3.13.2
+executable = /usr/bin/python3.13
+command = /home/dadams/Repos/california_equity_git/.venv/bin/python -m venv /home/dadams/Repos/california_equity_git/.venv