tools: update, rename cabal installation script

buildSandbox.sh

@@ -1,8 +0,0 @@
-cd hledger
-cabal sandbox init
-cabal sandbox add-source ../hledger-lib
-cabal sandbox add-source ../hledger-web
-
-cabal install --dependencies-only
-cabal configure
-cabal build

cabal-install.sh

@@ -0,0 +1,16 @@
+# Run this script to install all hledger packages using cabal
+# (if you prefer using cabal to stack)
+
+# use a sandbox in this directory to avoid build problems
+cabal sandbox init
+
+# maybe useful for some developers..
+cabal sandbox add-source ./hledger-lib
+cabal sandbox add-source ./hledger
+cabal sandbox add-source ./hledger-ui
+cabal sandbox add-source ./hledger-web
+cabal sandbox add-source ./hledger-api
+
+# build and install
+cabal install ./hledger-lib ./hledger ./hledger-ui ./hledger-web ./hledger-api \
+  && echo "hledger executables successfully installed in ./.cabal-sandbox/bin"

extra/hledger-equity.hs

@@ -1,19 +1,51 @@
-#!/usr/bin/env runhaskell
-{-
-
-Like ledger's equity command, print a journal entry posting the total
-balance of all accounts (or the specified account and its subaccounts)
-in the default journal.
-
-An entry like this is useful in the transition to a new journal file,
-to zero out asset/liability balances in the old file and initialise
-them in the new one. This way you get correct balances when reporting
-on either file, and when including both files at once.
-
-Usage: hledger-equity [ACCTPAT]
+#!/usr/bin/env stack
+{- stack runghc --verbosity info
+   --package hledger-lib
+   --package hledger
+   --package time
 -}
 
+{-
+hledger-equity [HLEDGEROPTS] [QUERY]
+
+Show a "closing balances" transaction that brings the balance of the
+accounts matched by QUERY (or all accounts) to zero, and an opposite
+"opening balances" transaction that restores the balances from zero.
+
+The opening balances transaction is useful to carry over
+asset/liability balances if you choose to start a new journal file,
+eg at the beginning of the year.
+
+The closing balances transaction is useful to zero out balances in
+the old file, which gives you the option of reporting on both files
+at once while still seeing correct balances.
+
+Balances are calculated, and the opening transaction is dated, as of
+the report end date, which you should specify with -e or date: (and
+the closing transaction is dated one day earlier). If a report end
+date is not specified, it defaults to today.
+
+If any matched account directly contains multiple commodities, the
+output may not be valid journal syntax, and will need some editing.
+
+Example:
+$ hledger equity -f 2015.journal -e 2016/1/1 assets liabilities >>2015.journal
+move opening balances txn to 2016.journal
+
+Open question: how to handle txns spanning a file boundary ? Eg:
+2015/12/30 * food
+    expenses:food:dining   $10
+    assets:bank:checking  -$10  ; date:2016/1/4
+
+This might or might not have some connection to the concept of
+"closing the books" in accounting.
+
+-}
+
+{-# LANGUAGE OverloadedStrings #-}
+
 import Data.Maybe (fromMaybe)
+import Data.Time.Calendar (addDays)
 import Hledger.Cli
 
 argsmode :: Mode RawOpts
@@ -22,6 +54,7 @@ argsmode = (defCommandMode ["equity"])
     ++ " (or the specified account and its subaccounts)"
     , modeGroupFlags = Group
       { groupNamed =
+          -- XXX update to match hledger
          [ ("Input",inputflags)
          , ("Reporting",reportflags)
          , ("Misc",helpflags)
@@ -46,5 +79,5 @@ main = do
             enddate = fromMaybe today $ queryEndDate (date2_ ropts_) q
             nps = [posting{paccount=a, pamount=negate b} | ((a,_,_),b) <- acctbals]
                  ++ [posting{paccount="equity:closing balances", pamount=negate balancingamt}]
-        putStr $ showTransactionUnelided (nulltransaction{tdate=enddate, tpostings=nps})
-        putStr $ showTransactionUnelided (nulltransaction{tdate=enddate, tpostings=ps})
+        putStr $ showTransaction (nulltransaction{tdate=addDays (-1) enddate, tdescription="closing balances", tpostings=nps})
+        putStr $ showTransaction (nulltransaction{tdate=enddate, tdescription="opening balances", tpostings=ps})