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 | |
45fa6ab3 |
14 | our $VERSION = '1.008001'; # 1.8.1 |
1f8043c8 |
15 | |
15f79556 |
16 | our @KNOWN_FLAGS = qw(--self-contained --deactivate --deactivate-all); |
17 | |
18 | sub DEACTIVATE_ONE () { 1 } |
19 | sub DEACTIVATE_ALL () { 2 } |
b5cc15f7 |
20 | |
21 | sub import { |
0fb70b9a |
22 | my ($class, @args) = @_; |
23 | |
e4892f2b |
24 | # Remember what PERL5LIB was when we started |
ea0824e7 |
25 | my $perl5lib = $ENV{PERL5LIB} || ''; |
e4892f2b |
26 | |
b9c94c15 |
27 | my %arg_store; |
28 | for my $arg (@args) { |
29 | # check for lethal dash first to stop processing before causing problems |
30 | if ($arg =~ /−/) { |
d4dbe584 |
31 | die <<'DEATH'; |
32 | WHOA THERE! It looks like you've got some fancy dashes in your commandline! |
33 | These are *not* the traditional -- dashes that software recognizes. You |
34 | probably got these by copy-pasting from the perldoc for this module as |
35 | rendered by a UTF8-capable formatter. This most typically happens on an OS X |
36 | terminal, but can happen elsewhere too. Please try again after replacing the |
37 | dashes with normal minus signs. |
38 | DEATH |
b9c94c15 |
39 | } |
40 | elsif(grep { $arg eq $_ } @KNOWN_FLAGS) { |
41 | (my $flag = $arg) =~ s/--//; |
42 | $arg_store{$flag} = 1; |
43 | } |
44 | elsif($arg =~ /^--/) { |
45 | die "Unknown import argument: $arg"; |
46 | } |
47 | else { |
48 | # assume that what's left is a path |
49 | $arg_store{path} = $arg; |
50 | } |
d4dbe584 |
51 | } |
b9c94c15 |
52 | |
b10fc4d4 |
53 | if($arg_store{'self-contained'}) { |
1f8043c8 |
54 | die "FATAL: The local::lib --self-contained flag has never worked reliably and the original author, Mark Stosberg, was unable or unwilling to maintain it. As such, this flag has been removed from the local::lib codebase in order to prevent misunderstandings and potentially broken builds. The local::lib authors recommend that you look at the lib::core::only module shipped with this distribution in order to create a more robust environment that is equivalent to what --self-contained provided (although quite possibly not what you originally thought it provided due to the poor quality of the documentation, for which we apologise).\n"; |
0fb70b9a |
55 | } |
b9c94c15 |
56 | |
15f79556 |
57 | my $deactivating = 0; |
58 | if ($arg_store{deactivate}) { |
59 | $deactivating = DEACTIVATE_ONE; |
60 | } |
61 | if ($arg_store{'deactivate-all'}) { |
62 | $deactivating = DEACTIVATE_ALL; |
63 | } |
64 | |
b9c94c15 |
65 | $arg_store{path} = $class->resolve_path($arg_store{path}); |
15f79556 |
66 | $class->setup_local_lib_for($arg_store{path}, $deactivating); |
0fb70b9a |
67 | |
6e5079df |
68 | for (@INC) { # Untaint @INC |
69 | next if ref; # Skip entry if it is an ARRAY, CODE, blessed, etc. |
70 | m/(.*)/ and $_ = $1; |
71 | } |
b5cc15f7 |
72 | } |
73 | |
5b94dce5 |
74 | sub pipeline; |
b5cc15f7 |
75 | |
5b94dce5 |
76 | sub pipeline { |
b5cc15f7 |
77 | my @methods = @_; |
78 | my $last = pop(@methods); |
79 | if (@methods) { |
80 | \sub { |
81 | my ($obj, @args) = @_; |
5b94dce5 |
82 | $obj->${pipeline @methods}( |
b5cc15f7 |
83 | $obj->$last(@args) |
84 | ); |
85 | }; |
86 | } else { |
87 | \sub { |
88 | shift->$last(@_); |
89 | }; |
90 | } |
91 | } |
92 | |
275c9dae |
93 | =begin testing |
94 | |
95 | #:: test pipeline |
b5cc15f7 |
96 | |
97 | package local::lib; |
98 | |
99 | { package Foo; sub foo { -$_[1] } sub bar { $_[1]+2 } sub baz { $_[1]+3 } } |
100 | my $foo = bless({}, 'Foo'); |
4c375968 |
101 | Test::More::ok($foo->${pipeline qw(foo bar baz)}(10) == -15); |
b5cc15f7 |
102 | |
275c9dae |
103 | =end testing |
104 | |
b5cc15f7 |
105 | =cut |
106 | |
a9489cb0 |
107 | sub _uniq { |
108 | my %seen; |
109 | grep { ! $seen{$_}++ } @_; |
110 | } |
111 | |
b5cc15f7 |
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 { |
8c6c886f |
155 | if (eval { require File::HomeDir } && $File::HomeDir::VERSION >= 0.65) { |
b5cc15f7 |
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($c->resolve_relative_path('bar'),'FOObar'); |
196 | |
275c9dae |
197 | =end testing |
198 | |
b5cc15f7 |
199 | =cut |
200 | |
201 | sub setup_local_lib_for { |
4c718913 |
202 | my ($class, $path, $deactivating) = @_; |
203 | $path = $class->ensure_dir_structure_for($path) unless $deactivating; |
b5cc15f7 |
204 | if ($0 eq '-') { |
4c718913 |
205 | $class->print_environment_vars_for($path, $deactivating); |
b5cc15f7 |
206 | exit 0; |
207 | } else { |
4c718913 |
208 | $class->setup_env_hash_for($path, $deactivating); |
a9489cb0 |
209 | @INC = _uniq(split($Config{path_sep}, $ENV{PERL5LIB}), @INC); |
b5cc15f7 |
210 | } |
211 | } |
212 | |
b5cc15f7 |
213 | sub install_base_bin_path { |
214 | my ($class, $path) = @_; |
215 | File::Spec->catdir($path, 'bin'); |
216 | } |
217 | |
218 | sub install_base_perl_path { |
219 | my ($class, $path) = @_; |
220 | File::Spec->catdir($path, 'lib', 'perl5'); |
221 | } |
222 | |
223 | sub install_base_arch_path { |
224 | my ($class, $path) = @_; |
225 | File::Spec->catdir($class->install_base_perl_path($path), $Config{archname}); |
226 | } |
227 | |
228 | sub ensure_dir_structure_for { |
229 | my ($class, $path) = @_; |
230 | unless (-d $path) { |
231 | warn "Attempting to create directory ${path}\n"; |
232 | } |
233 | File::Path::mkpath($path); |
53699c99 |
234 | # Need to have the path exist to make a short name for it, so |
235 | # converting to a short name here. |
236 | $path = Win32::GetShortPathName($path) if $^O eq 'MSWin32'; |
53699c99 |
237 | |
238 | return $path; |
b5cc15f7 |
239 | } |
240 | |
c2447f35 |
241 | sub INTERPOLATE_ENV () { 1 } |
242 | sub LITERAL_ENV () { 0 } |
b5cc15f7 |
243 | |
c4e3c83b |
244 | sub guess_shelltype { |
0353dbc0 |
245 | my $shellbin = 'sh'; |
246 | if(defined $ENV{'SHELL'}) { |
247 | my @shell_bin_path_parts = File::Spec->splitpath($ENV{'SHELL'}); |
248 | $shellbin = $shell_bin_path_parts[-1]; |
249 | } |
1bc71e56 |
250 | my $shelltype = do { |
251 | local $_ = $shellbin; |
b42496e0 |
252 | if(/csh/) { |
1bc71e56 |
253 | 'csh' |
b42496e0 |
254 | } else { |
1bc71e56 |
255 | 'bourne' |
256 | } |
257 | }; |
258 | |
f58534b1 |
259 | # Both Win32 and Cygwin have $ENV{COMSPEC} set. |
260 | if (defined $ENV{'COMSPEC'} && $^O ne 'cygwin') { |
53699c99 |
261 | my @shell_bin_path_parts = File::Spec->splitpath($ENV{'COMSPEC'}); |
262 | $shellbin = $shell_bin_path_parts[-1]; |
263 | $shelltype = do { |
264 | local $_ = $shellbin; |
265 | if(/command\.com/) { |
266 | 'win32' |
267 | } elsif(/cmd\.exe/) { |
268 | 'win32' |
269 | } elsif(/4nt\.exe/) { |
270 | 'win32' |
271 | } else { |
272 | $shelltype |
273 | } |
274 | }; |
275 | } |
c4e3c83b |
276 | return $shelltype; |
277 | } |
278 | |
279 | sub print_environment_vars_for { |
4c718913 |
280 | my ($class, $path, $deactivating) = @_; |
281 | print $class->environment_vars_string_for($path, $deactivating); |
8cc924b8 |
282 | } |
283 | |
284 | sub environment_vars_string_for { |
4c718913 |
285 | my ($class, $path, $deactivating) = @_; |
286 | my @envs = $class->build_environment_vars_for($path, $deactivating, LITERAL_ENV); |
c4e3c83b |
287 | my $out = ''; |
288 | |
289 | # rather basic csh detection, goes on the assumption that something won't |
290 | # call itself csh unless it really is. also, default to bourne in the |
291 | # pathological situation where a user doesn't have $ENV{SHELL} defined. |
292 | # note also that shells with funny names, like zoid, are assumed to be |
293 | # bourne. |
294 | |
295 | my $shelltype = $class->guess_shelltype; |
53699c99 |
296 | |
b5cc15f7 |
297 | while (@envs) { |
298 | my ($name, $value) = (shift(@envs), shift(@envs)); |
4c718913 |
299 | $value =~ s/(\\")/\\$1/g if defined $value; |
1bc71e56 |
300 | $out .= $class->${\"build_${shelltype}_env_declaration"}($name, $value); |
b5cc15f7 |
301 | } |
8cc924b8 |
302 | return $out; |
b5cc15f7 |
303 | } |
304 | |
1bc71e56 |
305 | # simple routines that take two arguments: an %ENV key and a value. return |
306 | # strings that are suitable for passing directly to the relevant shell to set |
307 | # said key to said value. |
308 | sub build_bourne_env_declaration { |
309 | my $class = shift; |
310 | my($name, $value) = @_; |
4c718913 |
311 | return defined($value) ? qq{export ${name}="${value}";\n} : qq{unset ${name};\n}; |
1bc71e56 |
312 | } |
313 | |
314 | sub build_csh_env_declaration { |
315 | my $class = shift; |
316 | my($name, $value) = @_; |
4c718913 |
317 | return defined($value) ? qq{setenv ${name} "${value}"\n} : qq{unsetenv ${name}\n}; |
1bc71e56 |
318 | } |
319 | |
53699c99 |
320 | sub build_win32_env_declaration { |
321 | my $class = shift; |
322 | my($name, $value) = @_; |
4c718913 |
323 | return defined($value) ? qq{set ${name}=${value}\n} : qq{set ${name}=\n}; |
53699c99 |
324 | } |
325 | |
b5cc15f7 |
326 | sub setup_env_hash_for { |
4c718913 |
327 | my ($class, $path, $deactivating) = @_; |
328 | my %envs = $class->build_environment_vars_for($path, $deactivating, INTERPOLATE_ENV); |
b5cc15f7 |
329 | @ENV{keys %envs} = values %envs; |
330 | } |
331 | |
332 | sub build_environment_vars_for { |
4c718913 |
333 | my ($class, $path, $deactivating, $interpolate) = @_; |
334 | |
15f79556 |
335 | if ($deactivating == DEACTIVATE_ONE) { |
4c718913 |
336 | return $class->build_deactivate_environment_vars_for($path, $interpolate); |
15f79556 |
337 | } elsif ($deactivating == DEACTIVATE_ALL) { |
338 | return $class->build_deact_all_environment_vars_for($path, $interpolate); |
4c718913 |
339 | } else { |
340 | return $class->build_activate_environment_vars_for($path, $interpolate); |
341 | } |
342 | } |
343 | |
344 | sub build_activate_environment_vars_for { |
b5cc15f7 |
345 | my ($class, $path, $interpolate) = @_; |
346 | return ( |
393c618d |
347 | PERL_LOCAL_LIB_ROOT => join($Config{path_sep}, |
348 | (($ENV{PERL_LOCAL_LIB_ROOT}||()) ? |
349 | ($interpolate == INTERPOLATE_ENV |
350 | ? ($ENV{PERL_LOCAL_LIB_ROOT}||()) |
351 | : (($^O ne 'MSWin32') ? '$PERL_LOCAL_LIB_ROOT' |
352 | : '%PERL_LOCAL_LIB_ROOT%' )) |
353 | : ()), |
354 | $path |
355 | ), |
e322149f |
356 | PERL_MB_OPT => "--install_base ${path}", |
b5cc15f7 |
357 | PERL_MM_OPT => "INSTALL_BASE=${path}", |
53699c99 |
358 | PERL5LIB => join($Config{path_sep}, |
b5cc15f7 |
359 | $class->install_base_arch_path($path), |
1b2a57eb |
360 | $class->install_base_perl_path($path), |
03b91976 |
361 | (($ENV{PERL5LIB}||()) ? |
c2447f35 |
362 | ($interpolate == INTERPOLATE_ENV |
363 | ? ($ENV{PERL5LIB}) |
53699c99 |
364 | : (($^O ne 'MSWin32') ? '$PERL5LIB' : '%PERL5LIB%' )) |
c2447f35 |
365 | : ()) |
b5cc15f7 |
366 | ), |
53699c99 |
367 | PATH => join($Config{path_sep}, |
b5cc15f7 |
368 | $class->install_base_bin_path($path), |
c2447f35 |
369 | ($interpolate == INTERPOLATE_ENV |
03b91976 |
370 | ? ($ENV{PATH}||()) |
53699c99 |
371 | : (($^O ne 'MSWin32') ? '$PATH' : '%PATH%' )) |
b5cc15f7 |
372 | ), |
373 | ) |
374 | } |
375 | |
29500601 |
376 | sub active_paths { |
377 | my ($class) = @_; |
378 | |
379 | return () unless defined $ENV{PERL_LOCAL_LIB_ROOT}; |
380 | return split /\Q$Config{path_sep}/, $ENV{PERL_LOCAL_LIB_ROOT}; |
381 | } |
382 | |
4c718913 |
383 | sub build_deactivate_environment_vars_for { |
384 | my ($class, $path, $interpolate) = @_; |
385 | |
29500601 |
386 | my @active_lls = $class->active_paths; |
4c718913 |
387 | |
388 | if (!grep { $_ eq $path } @active_lls) { |
389 | warn "Tried to deactivate inactive local::lib '$path'\n"; |
390 | return (); |
391 | } |
392 | |
393 | my @new_ll_root = grep { $_ ne $path } @active_lls; |
394 | my @new_perl5lib = grep { |
395 | $_ ne $class->install_base_arch_path($path) && |
396 | $_ ne $class->install_base_perl_path($path) |
397 | } split /\Q$Config{path_sep}/, $ENV{PERL5LIB}; |
398 | |
399 | my %env = ( |
400 | PERL_LOCAL_LIB_ROOT => (@new_ll_root ? |
401 | join($Config{path_sep}, @new_ll_root) : undef |
402 | ), |
403 | PERL5LIB => (@new_perl5lib ? |
404 | join($Config{path_sep}, @new_perl5lib) : undef |
405 | ), |
406 | PATH => join($Config{path_sep}, |
407 | grep { $_ ne $class->install_base_bin_path($path) } |
408 | split /\Q$Config{path_sep}/, $ENV{PATH} |
409 | ), |
410 | ); |
411 | |
412 | # If removing ourselves from the "top of the stack", set install paths to |
413 | # correspond with the new top of stack. |
414 | if ($active_lls[-1] eq $path) { |
415 | if (@active_lls > 1) { |
416 | my $new_top = $active_lls[-2]; |
417 | %env = (%env, |
418 | PERL_MB_OPT => "--install_base ${new_top}", |
419 | PERL_MM_OPT => "INSTALL_BASE=${new_top}", |
420 | ); |
421 | } else { |
422 | %env = (%env, |
423 | PERL_MB_OPT => undef, |
424 | PERL_MM_OPT => undef, |
425 | ); |
426 | } |
427 | } |
428 | |
429 | return %env; |
430 | } |
431 | |
15f79556 |
432 | sub build_deact_all_environment_vars_for { |
433 | my ($class, $path, $interpolate) = @_; |
434 | |
29500601 |
435 | my @active_lls = $class->active_paths; |
15f79556 |
436 | |
437 | my @new_perl5lib = split /\Q$Config{path_sep}/, $ENV{PERL5LIB}; |
438 | my @new_path = split /\Q$Config{path_sep}/, $ENV{PATH}; |
439 | |
440 | for my $path (@active_lls) { |
441 | @new_perl5lib = grep { |
442 | $_ ne $class->install_base_arch_path($path) && |
443 | $_ ne $class->install_base_perl_path($path) |
444 | } @new_perl5lib; |
445 | |
446 | @new_path = grep { |
447 | $_ ne $class->install_base_bin_path($path) |
448 | } @new_path; |
449 | } |
450 | |
451 | my %env = ( |
452 | PERL_LOCAL_LIB_ROOT => undef, |
453 | PERL_MM_OPT => undef, |
454 | PERL_MB_OPT => undef, |
455 | PERL5LIB => (@new_perl5lib ? |
456 | join($Config{path_sep}, @new_perl5lib) : undef |
457 | ), |
458 | PATH => join($Config{path_sep}, @new_path), |
459 | ); |
460 | |
461 | return %env; |
462 | } |
463 | |
275c9dae |
464 | =begin testing |
465 | |
466 | #:: test classmethod |
b5cc15f7 |
467 | |
468 | File::Path::rmtree('t/var/splat'); |
469 | |
4c375968 |
470 | $c->ensure_dir_structure_for('t/var/splat'); |
b5cc15f7 |
471 | |
472 | ok(-d 't/var/splat'); |
473 | |
275c9dae |
474 | =end testing |
475 | |
898f36cf |
476 | =encoding utf8 |
477 | |
b5cc15f7 |
478 | =head1 NAME |
479 | |
480 | local::lib - create and use a local lib/ for perl modules with PERL5LIB |
481 | |
482 | =head1 SYNOPSIS |
483 | |
484 | In code - |
485 | |
486 | use local::lib; # sets up a local lib at ~/perl5 |
487 | |
488 | use local::lib '~/foo'; # same, but ~/foo |
489 | |
1bc71e56 |
490 | # Or... |
491 | use FindBin; |
492 | use local::lib "$FindBin::Bin/../support"; # app-local support library |
493 | |
b5cc15f7 |
494 | From the shell - |
495 | |
359329d3 |
496 | # Install LWP and its missing dependencies to the '~/perl5' directory |
497 | perl -MCPAN -Mlocal::lib -e 'CPAN::install(LWP)' |
0fb70b9a |
498 | |
0fb70b9a |
499 | # Just print out useful shell commands |
b5cc15f7 |
500 | $ perl -Mlocal::lib |
e322149f |
501 | export PERL_MB_OPT='--install_base /home/username/perl5' |
c4e3c83b |
502 | export PERL_MM_OPT='INSTALL_BASE=/home/username/perl5' |
503 | export PERL5LIB='/home/username/perl5/lib/perl5/i386-linux:/home/username/perl5/lib/perl5' |
504 | export PATH="/home/username/perl5/bin:$PATH" |
b5cc15f7 |
505 | |
322b0a0d |
506 | =head2 The bootstrapping technique |
bc30e1d5 |
507 | |
730f5dda |
508 | A typical way to install local::lib is using what is known as the |
509 | "bootstrapping" technique. You would do this if your system administrator |
510 | hasn't already installed local::lib. In this case, you'll need to install |
898f36cf |
511 | local::lib in your home directory. |
512 | |
513 | If you do have administrative privileges, you will still want to set up your |
514 | environment variables, as discussed in step 4. Without this, you would still |
515 | install the modules into the system CPAN installation and also your Perl scripts |
516 | will not use the lib/ path you bootstrapped with local::lib. |
517 | |
04f8efde |
518 | By default local::lib installs itself and the CPAN modules into ~/perl5. |
519 | |
898f36cf |
520 | Windows users must also see L</Differences when using this module under Win32>. |
715c31a0 |
521 | |
730f5dda |
522 | 1. Download and unpack the local::lib tarball from CPAN (search for "Download" |
523 | on the CPAN page about local::lib). Do this as an ordinary user, not as root |
524 | or administrator. Unpack the file in your home directory or in any other |
525 | convenient location. |
715c31a0 |
526 | |
730f5dda |
527 | 2. Run this: |
715c31a0 |
528 | |
730f5dda |
529 | perl Makefile.PL --bootstrap |
715c31a0 |
530 | |
730f5dda |
531 | If the system asks you whether it should automatically configure as much |
532 | as possible, you would typically answer yes. |
533 | |
04f8efde |
534 | In order to install local::lib into a directory other than the default, you need |
535 | to specify the name of the directory when you call bootstrap, as follows: |
898f36cf |
536 | |
537 | perl Makefile.PL --bootstrap=~/foo |
538 | |
539 | 3. Run this: (local::lib assumes you have make installed on your system) |
730f5dda |
540 | |
541 | make test && make install |
542 | |
898f36cf |
543 | 4. Now we need to setup the appropriate environment variables, so that Perl |
544 | starts using our newly generated lib/ directory. If you are using bash or |
545 | any other Bourne shells, you can add this to your shell startup script this |
546 | way: |
730f5dda |
547 | |
548 | echo 'eval $(perl -I$HOME/perl5/lib/perl5 -Mlocal::lib)' >>~/.bashrc |
549 | |
550 | If you are using C shell, you can do this as follows: |
551 | |
552 | /bin/csh |
553 | echo $SHELL |
618272fe |
554 | /bin/csh |
730f5dda |
555 | perl -I$HOME/perl5/lib/perl5 -Mlocal::lib >> ~/.cshrc |
dc8ddd06 |
556 | |
898f36cf |
557 | If you passed to bootstrap a directory other than default, you also need to give that as |
558 | import parameter to the call of the local::lib module like this way: |
8b1e8e69 |
559 | |
730f5dda |
560 | echo 'eval $(perl -I$HOME/foo/lib/perl5 -Mlocal::lib=$HOME/foo)' >>~/.bashrc |
618272fe |
561 | |
aab64481 |
562 | After writing your shell configuration file, be sure to re-read it to get the |
898f36cf |
563 | changed settings into your current shell's environment. Bourne shells use |
564 | C<. ~/.bashrc> for this, whereas C shells use C<source ~/.cshrc>. |
aab64481 |
565 | |
b9c94c15 |
566 | If you're on a slower machine, or are operating under draconian disk space |
567 | limitations, you can disable the automatic generation of manpages from POD when |
568 | installing modules by using the C<--no-manpages> argument when bootstrapping: |
569 | |
730f5dda |
570 | perl Makefile.PL --bootstrap --no-manpages |
b9c94c15 |
571 | |
898f36cf |
572 | To avoid doing several bootstrap for several Perl module environments on the |
573 | same account, for example if you use it for several different deployed |
574 | applications independently, you can use one bootstrapped local::lib |
575 | installation to install modules in different directories directly this way: |
977a9ca3 |
576 | |
730f5dda |
577 | cd ~/mydir1 |
578 | perl -Mlocal::lib=./ |
579 | eval $(perl -Mlocal::lib=./) ### To set the environment for this shell alone |
898f36cf |
580 | printenv ### You will see that ~/mydir1 is in the PERL5LIB |
730f5dda |
581 | perl -MCPAN -e install ... ### whatever modules you want |
582 | cd ../mydir2 |
583 | ... REPEAT ... |
584 | |
480534a8 |
585 | If you are working with several C<local::lib> environments, you may want to |
586 | remove some of them from the current environment without disturbing the others. |
587 | You can deactivate one environment like this (using bourne sh): |
588 | |
589 | eval $(perl -Mlocal::lib=--deactivate,~/path) |
590 | |
591 | which will generate and run the commands needed to remove C<~/path> from your |
592 | various search paths. Whichever environment was B<activated most recently> will |
593 | remain the target for module installations. That is, if you activate |
594 | C<~/path_A> and then you activate C<~/path_B>, new modules you install will go |
595 | in C<~/path_B>. If you deactivate C<~/path_B> then modules will be installed |
596 | into C<~/pathA> -- but if you deactivate C<~/path_A> then they will still be |
597 | installed in C<~/pathB> because pathB was activated later. |
598 | |
599 | You can also ask C<local::lib> to clean itself completely out of the current |
600 | shell's environment with the C<--deactivate-all> option. |
730f5dda |
601 | For multiple environments for multiple apps you may need to include a modified |
602 | version of the C<< use FindBin >> instructions in the "In code" sample above. |
603 | If you did something like the above, you have a set of Perl modules at C<< |
604 | ~/mydir1/lib >>. If you have a script at C<< ~/mydir1/scripts/myscript.pl >>, |
605 | you need to tell it where to find the modules you installed for it at C<< |
606 | ~/mydir1/lib >>. |
977a9ca3 |
607 | |
608 | In C<< ~/mydir1/scripts/myscript.pl >>: |
609 | |
730f5dda |
610 | use strict; |
611 | use warnings; |
612 | use local::lib "$FindBin::Bin/.."; ### points to ~/mydir1 and local::lib finds lib |
613 | use lib "$FindBin::Bin/../lib"; ### points to ~/mydir1/lib |
977a9ca3 |
614 | |
615 | Put this before any BEGIN { ... } blocks that require the modules you installed. |
616 | |
53699c99 |
617 | =head2 Differences when using this module under Win32 |
618 | |
76f30678 |
619 | To set up the proper environment variables for your current session of |
620 | C<CMD.exe>, you can use this: |
621 | |
730f5dda |
622 | C:\>perl -Mlocal::lib |
e322149f |
623 | set PERL_MB_OPT=--install_base C:\DOCUME~1\ADMINI~1\perl5 |
730f5dda |
624 | set PERL_MM_OPT=INSTALL_BASE=C:\DOCUME~1\ADMINI~1\perl5 |
625 | set PERL5LIB=C:\DOCUME~1\ADMINI~1\perl5\lib\perl5;C:\DOCUME~1\ADMINI~1\perl5\lib\perl5\MSWin32-x86-multi-thread |
626 | set PATH=C:\DOCUME~1\ADMINI~1\perl5\bin;%PATH% |
627 | |
898f36cf |
628 | ### To set the environment for this shell alone |
730f5dda |
629 | C:\>perl -Mlocal::lib > %TEMP%\tmp.bat && %TEMP%\tmp.bat && del %TEMP%\temp.bat |
630 | ### instead of $(perl -Mlocal::lib=./) |
53699c99 |
631 | |
632 | If you want the environment entries to persist, you'll need to add then to the |
76f30678 |
633 | Control Panel's System applet yourself or use L<App::local::lib::Win32Helper>. |
53699c99 |
634 | |
635 | The "~" is translated to the user's profile directory (the directory named for |
636 | the user under "Documents and Settings" (Windows XP or earlier) or "Users" |
9bc0788f |
637 | (Windows Vista or later)) unless $ENV{HOME} exists. After that, the home |
53699c99 |
638 | directory is translated to a short name (which means the directory must exist) |
639 | and the subdirectories are created. |
640 | |
730f5dda |
641 | =head1 RATIONALE |
642 | |
643 | The version of a Perl package on your machine is not always the version you |
644 | need. Obviously, the best thing to do would be to update to the version you |
645 | need. However, you might be in a situation where you're prevented from doing |
646 | this. Perhaps you don't have system administrator privileges; or perhaps you |
647 | are using a package management system such as Debian, and nobody has yet gotten |
648 | around to packaging up the version you need. |
649 | |
650 | local::lib solves this problem by allowing you to create your own directory of |
651 | Perl packages downloaded from CPAN (in a multi-user system, this would typically |
652 | be within your own home directory). The existing system Perl installation is |
653 | not affected; you simply invoke Perl with special options so that Perl uses the |
654 | packages in your own local package directory rather than the system packages. |
655 | local::lib arranges things so that your locally installed version of the Perl |
656 | packages takes precedence over the system installation. |
657 | |
658 | If you are using a package management system (such as Debian), you don't need to |
659 | worry about Debian and CPAN stepping on each other's toes. Your local version |
660 | of the packages will be written to an entirely separate directory from those |
661 | installed by Debian. |
662 | |
618272fe |
663 | =head1 DESCRIPTION |
664 | |
665 | This module provides a quick, convenient way of bootstrapping a user-local Perl |
666 | module library located within the user's home directory. It also constructs and |
667 | prints out for the user the list of environment variables using the syntax |
668 | appropriate for the user's current shell (as specified by the C<SHELL> |
730f5dda |
669 | environment variable), suitable for directly adding to one's shell |
670 | configuration file. |
671 | |
672 | More generally, local::lib allows for the bootstrapping and usage of a |
673 | directory containing Perl modules outside of Perl's C<@INC>. This makes it |
674 | easier to ship an application with an app-specific copy of a Perl module, or |
675 | collection of modules. Useful in cases like when an upstream maintainer hasn't |
676 | applied a patch to a module of theirs that you need for your application. |
1bc71e56 |
677 | |
678 | On import, local::lib sets the following environment variables to appropriate |
679 | values: |
680 | |
681 | =over 4 |
682 | |
e322149f |
683 | =item PERL_MB_OPT |
1bc71e56 |
684 | |
685 | =item PERL_MM_OPT |
686 | |
687 | =item PERL5LIB |
688 | |
689 | =item PATH |
690 | |
691 | PATH is appended to, rather than clobbered. |
692 | |
693 | =back |
694 | |
695 | These values are then available for reference by any code after import. |
696 | |
b0c48f8e |
697 | =head1 CREATING A SELF-CONTAINED SET OF MODULES |
698 | |
a949ebcd |
699 | See L<lib::core::only> for one way to do this - but note that |
d8b1a404 |
700 | there are a number of caveats, and the best approach is always to perform a |
701 | build against a clean perl (i.e. site and vendor as close to empty as possible). |
b0c48f8e |
702 | |
480534a8 |
703 | =head1 OPTIONS |
704 | |
705 | Options are values that can be passed to the C<local::lib> import besides the |
706 | directory to use. They are specified as C<use local::lib '--option'[, path];> |
707 | or C<perl -Mlocal::lib=--option[,path]>. |
708 | |
709 | =head2 --deactivate |
710 | |
711 | Remove the chosen path (or the default path) from the module search paths if it |
712 | was added by C<local::lib>, instead of adding it. |
713 | |
714 | =head2 --deactivate-all |
715 | |
716 | Remove all directories that were added to search paths by C<local::lib> from the |
717 | search paths. |
718 | |
480e6e85 |
719 | =head1 METHODS |
720 | |
a949ebcd |
721 | =head2 ensure_dir_structure_for |
480e6e85 |
722 | |
723 | =over 4 |
724 | |
a949ebcd |
725 | =item Arguments: $path |
726 | |
727 | =item Return value: None |
480e6e85 |
728 | |
729 | =back |
730 | |
731 | Attempts to create the given path, and all required parent directories. Throws |
732 | an exception on failure. |
733 | |
734 | =head2 print_environment_vars_for |
735 | |
736 | =over 4 |
737 | |
a949ebcd |
738 | =item Arguments: $path |
739 | |
740 | =item Return value: None |
480e6e85 |
741 | |
742 | =back |
743 | |
744 | Prints to standard output the variables listed above, properly set to use the |
745 | given path as the base directory. |
746 | |
a949ebcd |
747 | =head2 build_environment_vars_for |
748 | |
749 | =over 4 |
750 | |
751 | =item Arguments: $path, $interpolate |
752 | |
753 | =item Return value: \%environment_vars |
754 | |
755 | =back |
756 | |
291b5a3a |
757 | Returns a hash with the variables listed above, properly set to use the |
758 | given path as the base directory. |
759 | |
480e6e85 |
760 | =head2 setup_env_hash_for |
761 | |
762 | =over 4 |
763 | |
a949ebcd |
764 | =item Arguments: $path |
765 | |
766 | =item Return value: None |
480e6e85 |
767 | |
768 | =back |
769 | |
770 | Constructs the C<%ENV> keys for the given path, by calling |
a949ebcd |
771 | L</build_environment_vars_for>. |
480e6e85 |
772 | |
773 | =head2 install_base_perl_path |
774 | |
775 | =over 4 |
776 | |
a949ebcd |
777 | =item Arguments: $path |
778 | |
779 | =item Return value: $install_base_perl_path |
480e6e85 |
780 | |
781 | =back |
782 | |
783 | Returns a path describing where to install the Perl modules for this local |
784 | library installation. Appends the directories C<lib> and C<perl5> to the given |
785 | path. |
786 | |
787 | =head2 install_base_arch_path |
788 | |
789 | =over 4 |
790 | |
a949ebcd |
791 | =item Arguments: $path |
792 | |
793 | =item Return value: $install_base_arch_path |
480e6e85 |
794 | |
795 | =back |
796 | |
797 | Returns a path describing where to install the architecture-specific Perl |
798 | modules for this local library installation. Based on the |
799 | L</install_base_perl_path> method's return value, and appends the value of |
800 | C<$Config{archname}>. |
801 | |
802 | =head2 install_base_bin_path |
803 | |
804 | =over 4 |
805 | |
a949ebcd |
806 | =item Arguments: $path |
807 | |
808 | =item Return value: $install_base_bin_path |
480e6e85 |
809 | |
810 | =back |
811 | |
812 | Returns a path describing where to install the executable programs for this |
813 | local library installation. Based on the L</install_base_perl_path> method's |
814 | return value, and appends the directory C<bin>. |
815 | |
480e6e85 |
816 | =head2 resolve_empty_path |
817 | |
818 | =over 4 |
819 | |
a949ebcd |
820 | =item Arguments: $path |
821 | |
822 | =item Return value: $base_path |
480e6e85 |
823 | |
824 | =back |
825 | |
826 | Builds and returns the base path into which to set up the local module |
827 | installation. Defaults to C<~/perl5>. |
828 | |
829 | =head2 resolve_home_path |
830 | |
831 | =over 4 |
832 | |
a949ebcd |
833 | =item Arguments: $path |
834 | |
835 | =item Return value: $home_path |
480e6e85 |
836 | |
837 | =back |
838 | |
839 | Attempts to find the user's home directory. If installed, uses C<File::HomeDir> |
840 | for this purpose. If no definite answer is available, throws an exception. |
841 | |
842 | =head2 resolve_relative_path |
843 | |
844 | =over 4 |
845 | |
a949ebcd |
846 | =item Arguments: $path |
847 | |
848 | =item Return value: $absolute_path |
480e6e85 |
849 | |
850 | =back |
851 | |
852 | Translates the given path into an absolute path. |
853 | |
854 | =head2 resolve_path |
855 | |
856 | =over 4 |
857 | |
a949ebcd |
858 | =item Arguments: $path |
859 | |
860 | =item Return value: $absolute_path |
480e6e85 |
861 | |
862 | =back |
863 | |
864 | Calls the following in a pipeline, passing the result from the previous to the |
865 | next, in an attempt to find where to configure the environment for a local |
866 | library installation: L</resolve_empty_path>, L</resolve_home_path>, |
867 | L</resolve_relative_path>. Passes the given path argument to |
868 | L</resolve_empty_path> which then returns a result that is passed to |
869 | L</resolve_home_path>, which then has its result passed to |
870 | L</resolve_relative_path>. The result of this final call is returned from |
871 | L</resolve_path>. |
872 | |
0fb70b9a |
873 | =head1 A WARNING ABOUT UNINST=1 |
874 | |
875 | Be careful about using local::lib in combination with "make install UNINST=1". |
876 | The idea of this feature is that will uninstall an old version of a module |
877 | before installing a new one. However it lacks a safety check that the old |
878 | version and the new version will go in the same directory. Used in combination |
879 | with local::lib, you can potentially delete a globally accessible version of a |
381738d7 |
880 | module while installing the new version in a local place. Only combine "make |
0fb70b9a |
881 | install UNINST=1" and local::lib if you understand these possible consequences. |
882 | |
dc8ddd06 |
883 | =head1 LIMITATIONS |
884 | |
47e70ca1 |
885 | The perl toolchain is unable to handle directory names with spaces in it, |
a8e981cf |
886 | so you cant put your local::lib bootstrap into a directory with spaces. What |
887 | you can do is moving your local::lib to a directory with spaces B<after> you |
888 | installed all modules inside your local::lib bootstrap. But be aware that you |
889 | cant update or install CPAN modules after the move. |
47e70ca1 |
890 | |
618272fe |
891 | Rather basic shell detection. Right now anything with csh in its name is |
892 | assumed to be a C shell or something compatible, and everything else is assumed |
53699c99 |
893 | to be Bourne, except on Win32 systems. If the C<SHELL> environment variable is |
894 | not set, a Bourne-compatible shell is assumed. |
dc8ddd06 |
895 | |
896 | Bootstrap is a hack and will use CPAN.pm for ExtUtils::MakeMaker even if you |
897 | have CPANPLUS installed. |
898 | |
e322149f |
899 | Kills any existing PERL5LIB, PERL_MM_OPT or PERL_MB_OPT. |
dc8ddd06 |
900 | |
e423efce |
901 | Should probably auto-fixup CPAN config if not already done. |
902 | |
dc8ddd06 |
903 | Patches very much welcome for any of the above. |
bc30e1d5 |
904 | |
53699c99 |
905 | On Win32 systems, does not have a way to write the created environment variables |
906 | to the registry, so that they can persist through a reboot. |
907 | |
9a021b2b |
908 | =head1 TROUBLESHOOTING |
909 | |
910 | If you've configured local::lib to install CPAN modules somewhere in to your |
911 | home directory, and at some point later you try to install a module with C<cpan |
912 | -i Foo::Bar>, but it fails with an error like: C<Warning: You do not have |
913 | permissions to install into /usr/lib64/perl5/site_perl/5.8.8/x86_64-linux at |
914 | /usr/lib64/perl5/5.8.8/Foo/Bar.pm> and buried within the install log is an |
915 | error saying C<'INSTALL_BASE' is not a known MakeMaker parameter name>, then |
916 | you've somehow lost your updated ExtUtils::MakeMaker module. |
917 | |
918 | To remedy this situation, rerun the bootstrapping procedure documented above. |
919 | |
920 | Then, run C<rm -r ~/.cpan/build/Foo-Bar*> |
921 | |
922 | Finally, re-run C<cpan -i Foo::Bar> and it should install without problems. |
923 | |
618272fe |
924 | =head1 ENVIRONMENT |
925 | |
926 | =over 4 |
927 | |
928 | =item SHELL |
929 | |
53699c99 |
930 | =item COMSPEC |
931 | |
618272fe |
932 | local::lib looks at the user's C<SHELL> environment variable when printing out |
933 | commands to add to the shell configuration file. |
934 | |
53699c99 |
935 | On Win32 systems, C<COMSPEC> is also examined. |
936 | |
618272fe |
937 | =back |
938 | |
cc19e8d4 |
939 | =head1 SUPPORT |
940 | |
941 | IRC: |
942 | |
943 | Join #local-lib on irc.perl.org. |
944 | |
b5cc15f7 |
945 | =head1 AUTHOR |
946 | |
947 | Matt S Trout <mst@shadowcat.co.uk> http://www.shadowcat.co.uk/ |
948 | |
d6b71a2d |
949 | auto_install fixes kindly sponsored by http://www.takkle.com/ |
950 | |
b5c1154d |
951 | =head1 CONTRIBUTORS |
952 | |
953 | Patches to correctly output commands for csh style shells, as well as some |
954 | documentation additions, contributed by Christopher Nehren <apeiron@cpan.org>. |
955 | |
cc19e8d4 |
956 | Doc patches for a custom local::lib directory, more cleanups in the english |
a949ebcd |
957 | documentation and a L<german documentation|POD2::DE::local::lib> contributed by Torsten Raudssus |
8b1e8e69 |
958 | <torsten@raudssus.de>. |
959 | |
be160790 |
960 | Hans Dieter Pearcey <hdp@cpan.org> sent in some additional tests for ensuring |
9a021b2b |
961 | things will install properly, submitted a fix for the bug causing problems with |
962 | writing Makefiles during bootstrapping, contributed an example program, and |
963 | submitted yet another fix to ensure that local::lib can install and bootstrap |
964 | properly. Many, many thanks! |
965 | |
966 | pattern of Freenode IRC contributed the beginnings of the Troubleshooting |
967 | section. Many thanks! |
be160790 |
968 | |
53699c99 |
969 | Patch to add Win32 support contributed by Curtis Jewell <csjewell@cpan.org>. |
970 | |
03b91976 |
971 | Warnings for missing PATH/PERL5LIB (as when not running interactively) silenced |
972 | by a patch from Marco Emilio Poleggi. |
973 | |
1f8043c8 |
974 | Mark Stosberg <mark@summersault.com> provided the code for the now deleted |
975 | '--self-contained' option. |
976 | |
76f30678 |
977 | Documentation patches to make win32 usage clearer by |
978 | David Mertens <dcmertens.perl@gmail.com> (run4flat). |
979 | |
a949ebcd |
980 | Brazilian L<portuguese translation|POD2::PT_BR::local::lib> and minor doc patches contributed by Breno |
ccf362c0 |
981 | G. de Oliveira <garu@cpan.org>. |
982 | |
a0b3d98a |
983 | Improvements to stacking multiple local::lib dirs and removing them from the |
984 | environment later on contributed by Andrew Rodland <arodland@cpan.org>. |
985 | |
7c0db165 |
986 | =head1 COPYRIGHT |
987 | |
cc19e8d4 |
988 | Copyright (c) 2007 - 2010 the local::lib L</AUTHOR> and L</CONTRIBUTORS> as |
7c0db165 |
989 | listed above. |
990 | |
b5cc15f7 |
991 | =head1 LICENSE |
992 | |
7c0db165 |
993 | This library is free software and may be distributed under the same terms |
994 | as perl itself. |
b5cc15f7 |
995 | |
996 | =cut |
997 | |
998 | 1; |