Commit | Line | Data |
b5cc15f7 |
1 | use strict; |
2 | use warnings; |
3 | |
4 | package local::lib; |
5 | |
c1441fb6 |
6 | use 5.008001; # probably works with earlier versions but I'm not supporting them |
7 | # (patches would, of course, be welcome) |
b5cc15f7 |
8 | |
9 | use File::Spec (); |
10 | use File::Path (); |
11 | use Carp (); |
12 | use Config; |
13 | |
b9c94c15 |
14 | our $VERSION = '1.004006'; # 1.4.6 |
15 | my @KNOWN_FLAGS = (qw/--self-contained/); |
b5cc15f7 |
16 | |
17 | sub import { |
0fb70b9a |
18 | my ($class, @args) = @_; |
b9c94c15 |
19 | @args <= 1 + @KNOWN_FLAGS or die <<'DEATH'; |
20 | Please see `perldoc local::lib` for directions on using this module. |
21 | DEATH |
0fb70b9a |
22 | |
e4892f2b |
23 | # Remember what PERL5LIB was when we started |
24 | my $perl5lib = $ENV{PERL5LIB}; |
25 | |
b9c94c15 |
26 | my %arg_store; |
27 | for my $arg (@args) { |
28 | # check for lethal dash first to stop processing before causing problems |
29 | if ($arg =~ /−/) { |
d4dbe584 |
30 | die <<'DEATH'; |
31 | WHOA THERE! It looks like you've got some fancy dashes in your commandline! |
32 | These are *not* the traditional -- dashes that software recognizes. You |
33 | probably got these by copy-pasting from the perldoc for this module as |
34 | rendered by a UTF8-capable formatter. This most typically happens on an OS X |
35 | terminal, but can happen elsewhere too. Please try again after replacing the |
36 | dashes with normal minus signs. |
37 | DEATH |
b9c94c15 |
38 | } |
39 | elsif(grep { $arg eq $_ } @KNOWN_FLAGS) { |
40 | (my $flag = $arg) =~ s/--//; |
41 | $arg_store{$flag} = 1; |
42 | } |
43 | elsif($arg =~ /^--/) { |
44 | die "Unknown import argument: $arg"; |
45 | } |
46 | else { |
47 | # assume that what's left is a path |
48 | $arg_store{path} = $arg; |
49 | } |
d4dbe584 |
50 | } |
b9c94c15 |
51 | |
52 | if($arg_store{'self-contained'}) { |
53 | # The only directories that remain are those that we just defined and those |
54 | # where core modules are stored. We put PERL5LIB first, so it'll be favored |
55 | # over privlibexp and archlibexp |
69b80106 |
56 | my %seen; |
57 | @INC = grep { ! $seen{$_}++ } ( |
b9c94c15 |
58 | $class->install_base_perl_path($arg_store{path}), |
59 | $class->install_base_arch_path($arg_store{path}), |
53699c99 |
60 | split( $Config{path_sep}, $perl5lib ), |
61 | $Config::Config{privlibexp}, |
62 | $Config::Config{archlibexp} |
63 | ); |
e4892f2b |
64 | |
69b80106 |
65 | # We explicitly set PERL5LIB here to the above de-duped list to prevent |
66 | # @INC from growing with each invocation |
67 | $ENV{PERL5LIB} = join( $Config{path_sep}, @INC ); |
0fb70b9a |
68 | } |
b9c94c15 |
69 | |
70 | $arg_store{path} = $class->resolve_path($arg_store{path}); |
71 | $class->setup_local_lib_for($arg_store{path}); |
0fb70b9a |
72 | |
6e5079df |
73 | for (@INC) { # Untaint @INC |
74 | next if ref; # Skip entry if it is an ARRAY, CODE, blessed, etc. |
75 | m/(.*)/ and $_ = $1; |
76 | } |
b5cc15f7 |
77 | } |
78 | |
5b94dce5 |
79 | sub pipeline; |
b5cc15f7 |
80 | |
5b94dce5 |
81 | sub pipeline { |
b5cc15f7 |
82 | my @methods = @_; |
83 | my $last = pop(@methods); |
84 | if (@methods) { |
85 | \sub { |
86 | my ($obj, @args) = @_; |
5b94dce5 |
87 | $obj->${pipeline @methods}( |
b5cc15f7 |
88 | $obj->$last(@args) |
89 | ); |
90 | }; |
91 | } else { |
92 | \sub { |
93 | shift->$last(@_); |
94 | }; |
95 | } |
96 | } |
97 | |
275c9dae |
98 | =begin testing |
99 | |
100 | #:: test pipeline |
b5cc15f7 |
101 | |
102 | package local::lib; |
103 | |
104 | { package Foo; sub foo { -$_[1] } sub bar { $_[1]+2 } sub baz { $_[1]+3 } } |
105 | my $foo = bless({}, 'Foo'); |
4c375968 |
106 | Test::More::ok($foo->${pipeline qw(foo bar baz)}(10) == -15); |
b5cc15f7 |
107 | |
275c9dae |
108 | =end testing |
109 | |
b5cc15f7 |
110 | =cut |
111 | |
112 | sub resolve_path { |
113 | my ($class, $path) = @_; |
5b94dce5 |
114 | $class->${pipeline qw( |
b5cc15f7 |
115 | resolve_relative_path |
116 | resolve_home_path |
117 | resolve_empty_path |
118 | )}($path); |
119 | } |
120 | |
121 | sub resolve_empty_path { |
122 | my ($class, $path) = @_; |
123 | if (defined $path) { |
124 | $path; |
125 | } else { |
126 | '~/perl5'; |
127 | } |
128 | } |
129 | |
275c9dae |
130 | =begin testing |
131 | |
132 | #:: test classmethod setup |
b5cc15f7 |
133 | |
134 | my $c = 'local::lib'; |
135 | |
275c9dae |
136 | =end testing |
137 | |
138 | =begin testing |
b5cc15f7 |
139 | |
275c9dae |
140 | #:: test classmethod |
b5cc15f7 |
141 | |
142 | is($c->resolve_empty_path, '~/perl5'); |
143 | is($c->resolve_empty_path('foo'), 'foo'); |
144 | |
275c9dae |
145 | =end testing |
146 | |
b5cc15f7 |
147 | =cut |
148 | |
149 | sub resolve_home_path { |
150 | my ($class, $path) = @_; |
151 | return $path unless ($path =~ /^~/); |
152 | my ($user) = ($path =~ /^~([^\/]+)/); # can assume ^~ so undef for 'us' |
153 | my $tried_file_homedir; |
154 | my $homedir = do { |
155 | if (eval { require File::HomeDir } && $File::HomeDir::VERSION >= 0.65) { |
156 | $tried_file_homedir = 1; |
157 | if (defined $user) { |
158 | File::HomeDir->users_home($user); |
159 | } else { |
dc8ddd06 |
160 | File::HomeDir->my_home; |
b5cc15f7 |
161 | } |
162 | } else { |
163 | if (defined $user) { |
164 | (getpwnam $user)[7]; |
165 | } else { |
166 | if (defined $ENV{HOME}) { |
167 | $ENV{HOME}; |
168 | } else { |
169 | (getpwuid $<)[7]; |
170 | } |
171 | } |
172 | } |
173 | }; |
174 | unless (defined $homedir) { |
175 | Carp::croak( |
176 | "Couldn't resolve homedir for " |
177 | .(defined $user ? $user : 'current user') |
178 | .($tried_file_homedir ? '' : ' - consider installing File::HomeDir') |
179 | ); |
180 | } |
181 | $path =~ s/^~[^\/]*/$homedir/; |
182 | $path; |
183 | } |
184 | |
185 | sub resolve_relative_path { |
186 | my ($class, $path) = @_; |
53699c99 |
187 | $path = File::Spec->rel2abs($path); |
b5cc15f7 |
188 | } |
189 | |
275c9dae |
190 | =begin testing |
191 | |
192 | #:: test classmethod |
b5cc15f7 |
193 | |
194 | local *File::Spec::rel2abs = sub { shift; 'FOO'.shift; }; |
195 | is($c->resolve_relative_path('bar'),'FOObar'); |
196 | |
275c9dae |
197 | =end testing |
198 | |
b5cc15f7 |
199 | =cut |
200 | |
201 | sub setup_local_lib_for { |
202 | my ($class, $path) = @_; |
53699c99 |
203 | $path = $class->ensure_dir_structure_for($path); |
b5cc15f7 |
204 | if ($0 eq '-') { |
205 | $class->print_environment_vars_for($path); |
206 | exit 0; |
207 | } else { |
208 | $class->setup_env_hash_for($path); |
53699c99 |
209 | unshift(@INC, split($Config{path_sep}, $ENV{PERL5LIB})); |
b5cc15f7 |
210 | } |
211 | } |
212 | |
213 | sub modulebuildrc_path { |
214 | my ($class, $path) = @_; |
215 | File::Spec->catfile($path, '.modulebuildrc'); |
216 | } |
217 | |
218 | sub install_base_bin_path { |
219 | my ($class, $path) = @_; |
220 | File::Spec->catdir($path, 'bin'); |
221 | } |
222 | |
223 | sub install_base_perl_path { |
224 | my ($class, $path) = @_; |
225 | File::Spec->catdir($path, 'lib', 'perl5'); |
226 | } |
227 | |
228 | sub install_base_arch_path { |
229 | my ($class, $path) = @_; |
230 | File::Spec->catdir($class->install_base_perl_path($path), $Config{archname}); |
231 | } |
232 | |
233 | sub ensure_dir_structure_for { |
234 | my ($class, $path) = @_; |
235 | unless (-d $path) { |
236 | warn "Attempting to create directory ${path}\n"; |
237 | } |
238 | File::Path::mkpath($path); |
53699c99 |
239 | # Need to have the path exist to make a short name for it, so |
240 | # converting to a short name here. |
241 | $path = Win32::GetShortPathName($path) if $^O eq 'MSWin32'; |
b5cc15f7 |
242 | my $modulebuildrc_path = $class->modulebuildrc_path($path); |
243 | if (-e $modulebuildrc_path) { |
244 | unless (-f _) { |
245 | Carp::croak("${modulebuildrc_path} exists but is not a plain file"); |
246 | } |
247 | } else { |
248 | warn "Attempting to create file ${modulebuildrc_path}\n"; |
249 | open MODULEBUILDRC, '>', $modulebuildrc_path |
250 | || Carp::croak("Couldn't open ${modulebuildrc_path} for writing: $!"); |
18bb63e0 |
251 | print MODULEBUILDRC qq{install --install_base ${path}\n} |
b5cc15f7 |
252 | || Carp::croak("Couldn't write line to ${modulebuildrc_path}: $!"); |
253 | close MODULEBUILDRC |
254 | || Carp::croak("Couldn't close file ${modulebuildrc_path}: $@"); |
255 | } |
53699c99 |
256 | |
257 | return $path; |
b5cc15f7 |
258 | } |
259 | |
c2447f35 |
260 | sub INTERPOLATE_ENV () { 1 } |
261 | sub LITERAL_ENV () { 0 } |
b5cc15f7 |
262 | |
263 | sub print_environment_vars_for { |
264 | my ($class, $path) = @_; |
c2447f35 |
265 | my @envs = $class->build_environment_vars_for($path, LITERAL_ENV); |
b5cc15f7 |
266 | my $out = ''; |
1bc71e56 |
267 | |
0353dbc0 |
268 | # rather basic csh detection, goes on the assumption that something won't |
269 | # call itself csh unless it really is. also, default to bourne in the |
270 | # pathological situation where a user doesn't have $ENV{SHELL} defined. |
271 | # note also that shells with funny names, like zoid, are assumed to be |
272 | # bourne. |
273 | my $shellbin = 'sh'; |
274 | if(defined $ENV{'SHELL'}) { |
275 | my @shell_bin_path_parts = File::Spec->splitpath($ENV{'SHELL'}); |
276 | $shellbin = $shell_bin_path_parts[-1]; |
277 | } |
1bc71e56 |
278 | my $shelltype = do { |
279 | local $_ = $shellbin; |
b42496e0 |
280 | if(/csh/) { |
1bc71e56 |
281 | 'csh' |
b42496e0 |
282 | } else { |
1bc71e56 |
283 | 'bourne' |
284 | } |
285 | }; |
286 | |
f58534b1 |
287 | # Both Win32 and Cygwin have $ENV{COMSPEC} set. |
288 | if (defined $ENV{'COMSPEC'} && $^O ne 'cygwin') { |
53699c99 |
289 | my @shell_bin_path_parts = File::Spec->splitpath($ENV{'COMSPEC'}); |
290 | $shellbin = $shell_bin_path_parts[-1]; |
291 | $shelltype = do { |
292 | local $_ = $shellbin; |
293 | if(/command\.com/) { |
294 | 'win32' |
295 | } elsif(/cmd\.exe/) { |
296 | 'win32' |
297 | } elsif(/4nt\.exe/) { |
298 | 'win32' |
299 | } else { |
300 | $shelltype |
301 | } |
302 | }; |
303 | } |
304 | |
b5cc15f7 |
305 | while (@envs) { |
306 | my ($name, $value) = (shift(@envs), shift(@envs)); |
307 | $value =~ s/(\\")/\\$1/g; |
1bc71e56 |
308 | $out .= $class->${\"build_${shelltype}_env_declaration"}($name, $value); |
b5cc15f7 |
309 | } |
310 | print $out; |
311 | } |
312 | |
1bc71e56 |
313 | # simple routines that take two arguments: an %ENV key and a value. return |
314 | # strings that are suitable for passing directly to the relevant shell to set |
315 | # said key to said value. |
316 | sub build_bourne_env_declaration { |
317 | my $class = shift; |
318 | my($name, $value) = @_; |
319 | return qq{export ${name}="${value}"\n}; |
320 | } |
321 | |
322 | sub build_csh_env_declaration { |
323 | my $class = shift; |
324 | my($name, $value) = @_; |
325 | return qq{setenv ${name} "${value}"\n}; |
326 | } |
327 | |
53699c99 |
328 | sub build_win32_env_declaration { |
329 | my $class = shift; |
330 | my($name, $value) = @_; |
331 | return qq{set ${name}=${value}\n}; |
332 | } |
333 | |
b5cc15f7 |
334 | sub setup_env_hash_for { |
335 | my ($class, $path) = @_; |
c2447f35 |
336 | my %envs = $class->build_environment_vars_for($path, INTERPOLATE_ENV); |
b5cc15f7 |
337 | @ENV{keys %envs} = values %envs; |
338 | } |
339 | |
340 | sub build_environment_vars_for { |
341 | my ($class, $path, $interpolate) = @_; |
342 | return ( |
343 | MODULEBUILDRC => $class->modulebuildrc_path($path), |
344 | PERL_MM_OPT => "INSTALL_BASE=${path}", |
53699c99 |
345 | PERL5LIB => join($Config{path_sep}, |
b5cc15f7 |
346 | $class->install_base_perl_path($path), |
347 | $class->install_base_arch_path($path), |
c2447f35 |
348 | ($ENV{PERL5LIB} ? |
349 | ($interpolate == INTERPOLATE_ENV |
350 | ? ($ENV{PERL5LIB}) |
53699c99 |
351 | : (($^O ne 'MSWin32') ? '$PERL5LIB' : '%PERL5LIB%' )) |
c2447f35 |
352 | : ()) |
b5cc15f7 |
353 | ), |
53699c99 |
354 | PATH => join($Config{path_sep}, |
b5cc15f7 |
355 | $class->install_base_bin_path($path), |
c2447f35 |
356 | ($interpolate == INTERPOLATE_ENV |
b5cc15f7 |
357 | ? $ENV{PATH} |
53699c99 |
358 | : (($^O ne 'MSWin32') ? '$PATH' : '%PATH%' )) |
b5cc15f7 |
359 | ), |
360 | ) |
361 | } |
362 | |
275c9dae |
363 | =begin testing |
364 | |
365 | #:: test classmethod |
b5cc15f7 |
366 | |
367 | File::Path::rmtree('t/var/splat'); |
368 | |
4c375968 |
369 | $c->ensure_dir_structure_for('t/var/splat'); |
b5cc15f7 |
370 | |
371 | ok(-d 't/var/splat'); |
372 | |
373 | ok(-f 't/var/splat/.modulebuildrc'); |
374 | |
275c9dae |
375 | =end testing |
376 | |
b5cc15f7 |
377 | =head1 NAME |
378 | |
379 | local::lib - create and use a local lib/ for perl modules with PERL5LIB |
380 | |
381 | =head1 SYNOPSIS |
382 | |
383 | In code - |
384 | |
385 | use local::lib; # sets up a local lib at ~/perl5 |
386 | |
387 | use local::lib '~/foo'; # same, but ~/foo |
388 | |
1bc71e56 |
389 | # Or... |
390 | use FindBin; |
391 | use local::lib "$FindBin::Bin/../support"; # app-local support library |
392 | |
b5cc15f7 |
393 | From the shell - |
394 | |
0fb70b9a |
395 | # Install LWP and it's missing dependencies to the 'my_lwp' directory |
396 | perl -MCPAN -Mlocal::lib=my_lwp -e 'CPAN::install(LWP)' |
397 | |
398 | # Install LWP and *all non-core* dependencies to the 'my_lwp' directory |
399 | perl -MCPAN -Mlocal::lib=--self-contained,my_lwp -e 'CPAN::install(LWP)' |
400 | |
401 | # Just print out useful shell commands |
b5cc15f7 |
402 | $ perl -Mlocal::lib |
403 | export MODULEBUILDRC=/home/username/perl/.modulebuildrc |
404 | export PERL_MM_OPT='INSTALL_BASE=/home/username/perl' |
405 | export PERL5LIB='/home/username/perl/lib/perl5:/home/username/perl/lib/perl5/i386-linux' |
406 | export PATH="/home/username/perl/bin:$PATH" |
407 | |
bc30e1d5 |
408 | To bootstrap if you don't have local::lib itself installed - |
409 | |
e423efce |
410 | <download local::lib tarball from CPAN, unpack and cd into dir> |
715c31a0 |
411 | |
bc30e1d5 |
412 | $ perl Makefile.PL --bootstrap |
413 | $ make test && make install |
715c31a0 |
414 | |
dc8ddd06 |
415 | $ echo 'eval $(perl -I$HOME/perl5/lib/perl5 -Mlocal::lib)' >>~/.bashrc |
715c31a0 |
416 | |
618272fe |
417 | # Or for C shells... |
715c31a0 |
418 | |
618272fe |
419 | $ /bin/csh |
420 | % echo $SHELL |
421 | /bin/csh |
422 | % perl -I$HOME/perl5/lib/perl5 -Mlocal::lib >> ~/.cshrc |
dc8ddd06 |
423 | |
53699c99 |
424 | You can also pass --bootstrap=~/foo to get a different location - |
8b1e8e69 |
425 | |
426 | $ perl Makefile.PL --bootstrap=~/foo |
427 | $ make test && make install |
428 | |
429 | $ echo 'eval $(perl -I$HOME/foo/lib/perl5 -Mlocal::lib=$HOME/foo)' >>~/.bashrc |
618272fe |
430 | |
b9c94c15 |
431 | If you're on a slower machine, or are operating under draconian disk space |
432 | limitations, you can disable the automatic generation of manpages from POD when |
433 | installing modules by using the C<--no-manpages> argument when bootstrapping: |
434 | |
435 | $ perl Makefile.PL --bootstrap --no-manpages |
436 | |
977a9ca3 |
437 | If you want to install multiple Perl module environments, say for application evelopment, |
438 | install local::lib globally and then: |
439 | |
440 | $ cd ~/mydir1 |
441 | $ perl -Mlocal::lib=./ |
442 | $ eval $(perl -Mlocal::lib=./) ### To set the environment for this shell alone |
443 | $ printenv ### You will see that ~/mydir1 is in the PERL5LIB |
444 | $ perl -MCPAN -e install ... ### whatever modules you want |
445 | $ cd ../mydir2 |
446 | ... REPEAT ... |
447 | |
448 | For multiple environments for multiple apps you may need to include a modified version of |
449 | the C<< use FindBin >> instructions in the "In code" sample above. If you did something like |
450 | the above, you have a set of Perl modules at C<< ~/mydir1/lib >>. If you have a script at |
451 | C<< ~/mydir1/scripts/myscript.pl >>, you need to tell it where to find the modules you installed |
c4dbb66c |
452 | for it at C<< ~/mydir1/lib >>. |
977a9ca3 |
453 | |
454 | In C<< ~/mydir1/scripts/myscript.pl >>: |
455 | |
456 | use strict; |
457 | use warnings; |
458 | use local::lib "$FindBin::Bin/.."; ### points to ~/mydir1 and local::lib finds lib |
459 | use lib "$FindBin::Bin/../lib"; ### points to ~/mydir1/lib |
460 | |
461 | Put this before any BEGIN { ... } blocks that require the modules you installed. |
462 | |
53699c99 |
463 | =head2 Differences when using this module under Win32 |
464 | |
465 | C:\>perl -Mlocal::lib |
466 | set MODULEBUILDRC=C:\DOCUME~1\ADMINI~1\perl5\.modulebuildrc |
467 | set PERL_MM_OPT=INSTALL_BASE=C:\DOCUME~1\ADMINI~1\perl5 |
468 | set PERL5LIB=C:\DOCUME~1\ADMINI~1\perl5\lib\perl5;C:\DOCUME~1\ADMINI~1\perl5\lib\perl5\MSWin32-x86-multi-thread |
469 | set PATH=C:\DOCUME~1\ADMINI~1\perl5\bin;%PATH% |
470 | |
471 | ### To set the environment for this shell alone |
472 | C:\>perl -Mlocal::lib > %TEMP%\tmp.bat && %TEMP%\tmp.bat && del %TEMP%\temp.bat |
473 | ### instead of $(perl -Mlocal::lib=./) |
474 | |
475 | If you want the environment entries to persist, you'll need to add then to the |
476 | Control Panel's System applet yourself at the moment. |
477 | |
478 | The "~" is translated to the user's profile directory (the directory named for |
479 | the user under "Documents and Settings" (Windows XP or earlier) or "Users" |
480 | (Windows Vista or later) unless $ENV{HOME} exists. After that, the home |
481 | directory is translated to a short name (which means the directory must exist) |
482 | and the subdirectories are created. |
483 | |
618272fe |
484 | =head1 DESCRIPTION |
485 | |
486 | This module provides a quick, convenient way of bootstrapping a user-local Perl |
487 | module library located within the user's home directory. It also constructs and |
488 | prints out for the user the list of environment variables using the syntax |
489 | appropriate for the user's current shell (as specified by the C<SHELL> |
490 | environment variable), suitable for directly adding to one's shell configuration |
491 | file. |
dc8ddd06 |
492 | |
1bc71e56 |
493 | More generally, local::lib allows for the bootstrapping and usage of a directory |
494 | containing Perl modules outside of Perl's C<@INC>. This makes it easier to ship |
495 | an application with an app-specific copy of a Perl module, or collection of |
496 | modules. Useful in cases like when an upstream maintainer hasn't applied a patch |
497 | to a module of theirs that you need for your application. |
498 | |
499 | On import, local::lib sets the following environment variables to appropriate |
500 | values: |
501 | |
502 | =over 4 |
503 | |
504 | =item MODULEBUILDRC |
505 | |
506 | =item PERL_MM_OPT |
507 | |
508 | =item PERL5LIB |
509 | |
510 | =item PATH |
511 | |
512 | PATH is appended to, rather than clobbered. |
513 | |
514 | =back |
515 | |
516 | These values are then available for reference by any code after import. |
517 | |
480e6e85 |
518 | =head1 METHODS |
519 | |
520 | =head2 ensure_directory_structure_for |
521 | |
522 | =over 4 |
523 | |
524 | =item Arguments: path |
525 | |
526 | =back |
527 | |
528 | Attempts to create the given path, and all required parent directories. Throws |
529 | an exception on failure. |
530 | |
531 | =head2 print_environment_vars_for |
532 | |
533 | =over 4 |
534 | |
535 | =item Arguments: path |
536 | |
537 | =back |
538 | |
539 | Prints to standard output the variables listed above, properly set to use the |
540 | given path as the base directory. |
541 | |
542 | =head2 setup_env_hash_for |
543 | |
544 | =over 4 |
545 | |
546 | =item Arguments: path |
547 | |
548 | =back |
549 | |
550 | Constructs the C<%ENV> keys for the given path, by calling |
551 | C<build_environment_vars_for>. |
552 | |
553 | =head2 install_base_perl_path |
554 | |
555 | =over 4 |
556 | |
557 | =item Arguments: path |
558 | |
559 | =back |
560 | |
561 | Returns a path describing where to install the Perl modules for this local |
562 | library installation. Appends the directories C<lib> and C<perl5> to the given |
563 | path. |
564 | |
565 | =head2 install_base_arch_path |
566 | |
567 | =over 4 |
568 | |
569 | =item Arguments: path |
570 | |
571 | =back |
572 | |
573 | Returns a path describing where to install the architecture-specific Perl |
574 | modules for this local library installation. Based on the |
575 | L</install_base_perl_path> method's return value, and appends the value of |
576 | C<$Config{archname}>. |
577 | |
578 | =head2 install_base_bin_path |
579 | |
580 | =over 4 |
581 | |
582 | =item Arguments: path |
583 | |
584 | =back |
585 | |
586 | Returns a path describing where to install the executable programs for this |
587 | local library installation. Based on the L</install_base_perl_path> method's |
588 | return value, and appends the directory C<bin>. |
589 | |
590 | =head2 modulebuildrc_path |
591 | |
592 | =over 4 |
593 | |
594 | =item Arguments: path |
595 | |
596 | =back |
597 | |
598 | Returns a path describing where to install the C<.modulebuildrc> file, based on |
599 | the given path. |
600 | |
601 | =head2 resolve_empty_path |
602 | |
603 | =over 4 |
604 | |
605 | =item Arguments: path |
606 | |
607 | =back |
608 | |
609 | Builds and returns the base path into which to set up the local module |
610 | installation. Defaults to C<~/perl5>. |
611 | |
612 | =head2 resolve_home_path |
613 | |
614 | =over 4 |
615 | |
616 | =item Arguments: path |
617 | |
618 | =back |
619 | |
620 | Attempts to find the user's home directory. If installed, uses C<File::HomeDir> |
621 | for this purpose. If no definite answer is available, throws an exception. |
622 | |
623 | =head2 resolve_relative_path |
624 | |
625 | =over 4 |
626 | |
627 | =item Arguments: path |
628 | |
629 | =back |
630 | |
631 | Translates the given path into an absolute path. |
632 | |
633 | =head2 resolve_path |
634 | |
635 | =over 4 |
636 | |
637 | =item Arguments: path |
638 | |
639 | =back |
640 | |
641 | Calls the following in a pipeline, passing the result from the previous to the |
642 | next, in an attempt to find where to configure the environment for a local |
643 | library installation: L</resolve_empty_path>, L</resolve_home_path>, |
644 | L</resolve_relative_path>. Passes the given path argument to |
645 | L</resolve_empty_path> which then returns a result that is passed to |
646 | L</resolve_home_path>, which then has its result passed to |
647 | L</resolve_relative_path>. The result of this final call is returned from |
648 | L</resolve_path>. |
649 | |
0fb70b9a |
650 | =head1 A WARNING ABOUT UNINST=1 |
651 | |
652 | Be careful about using local::lib in combination with "make install UNINST=1". |
653 | The idea of this feature is that will uninstall an old version of a module |
654 | before installing a new one. However it lacks a safety check that the old |
655 | version and the new version will go in the same directory. Used in combination |
656 | with local::lib, you can potentially delete a globally accessible version of a |
381738d7 |
657 | module while installing the new version in a local place. Only combine "make |
0fb70b9a |
658 | install UNINST=1" and local::lib if you understand these possible consequences. |
659 | |
dc8ddd06 |
660 | =head1 LIMITATIONS |
661 | |
618272fe |
662 | Rather basic shell detection. Right now anything with csh in its name is |
663 | assumed to be a C shell or something compatible, and everything else is assumed |
53699c99 |
664 | to be Bourne, except on Win32 systems. If the C<SHELL> environment variable is |
665 | not set, a Bourne-compatible shell is assumed. |
dc8ddd06 |
666 | |
667 | Bootstrap is a hack and will use CPAN.pm for ExtUtils::MakeMaker even if you |
668 | have CPANPLUS installed. |
669 | |
670 | Kills any existing PERL5LIB, PERL_MM_OPT or MODULEBUILDRC. |
671 | |
e423efce |
672 | Should probably auto-fixup CPAN config if not already done. |
673 | |
dc8ddd06 |
674 | Patches very much welcome for any of the above. |
bc30e1d5 |
675 | |
53699c99 |
676 | On Win32 systems, does not have a way to write the created environment variables |
677 | to the registry, so that they can persist through a reboot. |
678 | |
9a021b2b |
679 | =head1 TROUBLESHOOTING |
680 | |
681 | If you've configured local::lib to install CPAN modules somewhere in to your |
682 | home directory, and at some point later you try to install a module with C<cpan |
683 | -i Foo::Bar>, but it fails with an error like: C<Warning: You do not have |
684 | permissions to install into /usr/lib64/perl5/site_perl/5.8.8/x86_64-linux at |
685 | /usr/lib64/perl5/5.8.8/Foo/Bar.pm> and buried within the install log is an |
686 | error saying C<'INSTALL_BASE' is not a known MakeMaker parameter name>, then |
687 | you've somehow lost your updated ExtUtils::MakeMaker module. |
688 | |
689 | To remedy this situation, rerun the bootstrapping procedure documented above. |
690 | |
691 | Then, run C<rm -r ~/.cpan/build/Foo-Bar*> |
692 | |
693 | Finally, re-run C<cpan -i Foo::Bar> and it should install without problems. |
694 | |
618272fe |
695 | =head1 ENVIRONMENT |
696 | |
697 | =over 4 |
698 | |
699 | =item SHELL |
700 | |
53699c99 |
701 | =item COMSPEC |
702 | |
618272fe |
703 | local::lib looks at the user's C<SHELL> environment variable when printing out |
704 | commands to add to the shell configuration file. |
705 | |
53699c99 |
706 | On Win32 systems, C<COMSPEC> is also examined. |
707 | |
618272fe |
708 | =back |
709 | |
b5cc15f7 |
710 | =head1 AUTHOR |
711 | |
712 | Matt S Trout <mst@shadowcat.co.uk> http://www.shadowcat.co.uk/ |
713 | |
d6b71a2d |
714 | auto_install fixes kindly sponsored by http://www.takkle.com/ |
715 | |
b5c1154d |
716 | =head1 CONTRIBUTORS |
717 | |
718 | Patches to correctly output commands for csh style shells, as well as some |
719 | documentation additions, contributed by Christopher Nehren <apeiron@cpan.org>. |
720 | |
0fb70b9a |
721 | '--self-contained' feature contributed by Mark Stosberg <mark@summersault.com>. |
722 | |
b9c94c15 |
723 | Ability to pass '--self-contained' without a directory inspired by frew on |
724 | irc.perl.org/#catalyst. |
725 | |
c4dbb66c |
726 | Doc patches for a custom local::lib directory contributed by Torsten Raudssus |
8b1e8e69 |
727 | <torsten@raudssus.de>. |
728 | |
be160790 |
729 | Hans Dieter Pearcey <hdp@cpan.org> sent in some additional tests for ensuring |
9a021b2b |
730 | things will install properly, submitted a fix for the bug causing problems with |
731 | writing Makefiles during bootstrapping, contributed an example program, and |
732 | submitted yet another fix to ensure that local::lib can install and bootstrap |
733 | properly. Many, many thanks! |
734 | |
735 | pattern of Freenode IRC contributed the beginnings of the Troubleshooting |
736 | section. Many thanks! |
be160790 |
737 | |
53699c99 |
738 | Patch to add Win32 support contributed by Curtis Jewell <csjewell@cpan.org>. |
739 | |
b5cc15f7 |
740 | =head1 LICENSE |
741 | |
53699c99 |
742 | This library is free software under the same license as perl itself. |
b5cc15f7 |
743 | |
744 | =cut |
745 | |
746 | 1; |