make scripts and script execution nix compatible

srv/content/file_io.hy

@@ -8,7 +8,7 @@
 
 (defn execute-bash [data]
   (sub r"\$\[(.*?)\]" (fn [sequence]
-    (. (check-output (.group sequence 1) :shell True :executable "/bin/bash" :env hy-env) (decode) (strip))) 
+    (. (check-output (.group sequence 1) :shell True :executable "bash" :env hy-env) (decode) (strip)))
     data))
 
 (defn parse-html-file [path #** kwargs]

www/src/scripts/execute-bash

@@ -8,4 +8,4 @@
 (setv env hy-env)
 (setv (get env "PATH") (+ (get hy-env "PATH") ":./scripts"))
 
-(print (sub r"\$\[(.*?)\]" (fn [sequence] (. (check-output (.group sequence 1) :shell True :executable "/bin/bash" :env env) (decode) (strip))) (with [fp (open (get argv 1) "r")] (.read fp))))
+(print (sub r"\$\[(.*?)\]" (fn [sequence] (. (check-output (.group sequence 1) :shell True :executable "bash" :env env) (decode) (strip))) (with [fp (open (get argv 1) "r")] (.read fp))))

www/src/scripts/img-caption

@@ -1,4 +1,4 @@
-#!/bin/bash 
+#!/usr/bin/env bash
 
 path=$1
 caption=$2

www/src/scripts/syntax-hl

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 tmpfile=$(mktemp)
 
 timeout 0.6s nvim "$1" -c "set nonu | set nornu" -c "autocmd LspAttach * execute 'TOhtml | w! ${tmpfile} | qa!'" >/dev/null || nvim "$1" -c "set nonu | set nornu" -c "TOhtml | w! ${tmpfile} | qa!" >/dev/null